While the princesses were discussing the situation at hand, Colgate was sitting in her room thinking about what Celestia had offered her. She had lived an extremely long life and felt like she just couldn't handle any more but given that Celestia would allow her to live as close to a normal life as possible, the long life didn't seem quite so bad to her. She also realized that the only pony that Dark Night and Lightning Storm may truly trust would be her and she didn't want to jeopardize the alliance with two new allies.
She also knew that what Celestia said about her knowledge was true. While the immediate threats were thwarted and Twilight would never cause any problems, events further down the road, namely Grogar, Tirek and Tirac would likely still happen. She also realized that she is the only pony who knows where Dream Valley is and knows where the Rainbow of Light is since it would be necessary to defeat the Rainbow of Darkness. After a half an hour of contemplating everything, particularly how her very presence may be what saves Equestria in the distant future, she came to a decision.
When she returned to her living room, she had a smile on her face and said, "Princess Celestia, I have come to a decision."
Celestia asked, "What is your decision?"
Colgate began, "As you have stated, I have a lot of knowledge about future events and there are some things that I am certain will still happen, things that are completely unrelated to Twilight's corruption. Also, I may be the only pony that King Dark Night and King Lightning Storm may trust. Also, I am the only pony who knows where Dream Valley is and knows exactly where the Rainbow of Light is located. Given that you will allow me to remain a dentist, I have decided to keep my Alicornhood, enhanced powers, the diamond heart and my immortality."
She saw a look of relief coming from the four, especially Celestia. That look of nervousness would return when Colgate finished, "There is one more thing I ask......"
Celestia asked, "What is that?"
Colgate replied, "A new bed. The bed I have right now is far too small for me."
Celestia laughed, "Oh don't worry about a new bed, we can handle that easily." She then became more serious and continued, "Now to hopefully nip any questioning in the bud, we shall present you to Ponyville in your new form."
Luna added, "What we will do is bring up how you wrote a pain free root canal for my sister and that we ultimately decided you were deserving of being ascended."
Colgate said, "Alright but what about the heart? How in Equestria are we going to explain that away?"
The princesses and Spike sat there in a state of silence not sure how they would explain it until Spike spoke up, "Hey, you could always say it was something that formed during her transformation because she cares deeply about all her patients."
Everypony gave Spike an odd look but it would be Colgate that would respond first, "You know, that might just work."
Celestia replied, "It might but we all care about everypony and that didn't happen with Twilight when she was ascended."
Luna suggested, "Colgate, would you still have the same level of powers without that heart? Would you still be able to take on the evils of the distant future without it?"
Colgate knew that the heart enhanced her powers significantly and she also knew that removing it would be more painful than fusing it into herself was. She replied, "I probably wouldn't. To face off against the evils of the distant future, I will likely need this. I know from experience that there are some foes that normal magic simply won't be enough to handle."
"Very well." replied Celestia. She then turned to Twilight and asked, "Could you and Spike go out and inform the town of an important event that will take place at the town hall at noon."
Twilight said, "Yes, we can do that." She then turned to Spike and continued, "Come on Spike, let's get going."
The two left, leaving Colgate, Celestia and Luna behind. Both princesses saw a bit of a nervous look on Colgate's face and this brought concern to them, "Colgate, what is wrong? Why do you look so nervous?" asked Luna.
Colgate replied, "I'm just nervous over how they will react and I'm not a fan of large crowds to start with. I also do have my concerns about how they are going to react towards an Alicorn that won't have any kind of royal title like Twilight does."
Celestia spoke up, "That could be a problem but I do think that maybe if we bring up how you will be the ambassador to two nations, you could use the title 'Ambassador Colgate.'"
Colgate was thrilled when she heard this. She never did want any kind of royal title attached to her name and agreed, "I think that is a great idea. Thanks for suggesting it."
Nearly three hours had passed and it was five minutes before noon. While the princess were calm and collected, including a smile on Celestia's face, Colgate was quickly becoming a nervous wreck. So many situations were running through her mind, situations such as ponies booing her, launching non-stop questions and the thing that scared her the most, no longer seeing her because of her new form. Princess Celestia stood up and asked, "Shall we? Shall we head over to the town hall."
Colgate did not respond for a minute and Celestia had to get her attention, "Shall we?"
Colgate lit up her horn and asked, "Could we teleport over there? I don't think I'm quite ready to face the whole town yet."
Celestia sighed, "Very well."
The three teleported into the town hall. Once they arrived, Luna peeked out the door and saw that the whole town was likely present and that Twilight was out talking with her friends before the ceremony. She also noticed that the clock tower was about to strike twelve. She turned back and said, "Well Colgate, it is time."
The clock tower struck noon and once it finished ringing, Luna and Celestia headed towards the exit. Celestia asked, "Colgate, I will give an address and when I open the doors, you will come out and be introduced."
"A-al-alright." stuttered Colgate.
Luna suggested, "Colgate, instead of thinking negative and focusing on everything that could go wrong, I think you should think positive and focus on what can go right."
Colgate gave her a nervous nod as Luna headed back outside. Five minutes later than scheduled, Celestia started the ceremony.
She began, "Citizens of Ponyville, as you all know it was not long ago that Equestria crowned Twilight Sparkle as the fourth Alicorn princess. We have had another momentous occasion happen recently as yet another pony wrote her own magic. The magic she wrote is something that will be beneficial to everypony and hopefully ease the fears of some ponies."
A pony out in the crowd yelled, "Well who is it?"
Celestia continued, "She shall be presented soon." She then continued, "Recently this pony, despite not having to, was able to vanquish two of Celestia's foes on her own. Because of her and a special spell she also wrote, Equestria has two new allies in the Kingdom of the Dark Unicorns and the Changeling Kingdom."
When Colgate heard Celestia bring this up from inside, she was mortified. She wasn't sure if Celestia simply said those things because she couldn't think of anything else to say or if it was part of her plan but after that, she was even more nervous but she knew she had to be strong. She knew that if ponies were to trust her in what part of her role would be that she couldn't show any kind of weakness.
Celestia then grabbed the doors in her aura and announced, "And I present to you all for the very first time, Ambassador Colgate!"
Celestia opened the doors and Colgate nervously stepped out onto the stage. Unlike it was with Twilight when the ponies of Canterlot cheered her arrival, the crowd went silent. They were in a state of shock as they stared at the large blue Alicorn. Colgate could tell that they were likely questioning why she was larger than Celestia, why she had a bit of an aura to her and especially wondering what was up with the diamond heart.
She was silent until Celestia leaned forward and said, "Say something ambassador."
Colgate stepped forward and began, "Thank you all for showing up but I want to let you know that if I don't say much, it isn't because I don't care about you, it is just that I get nervous in front of large crowds."
Colgate saw a majority of the ponies give her a sympathetic smile indicating that they either understood how she felt or were at least happy that she admitted what some may consider a fault. She continued, "Like Princess Celestia said, I did write a spell that will help many. A while back I wrote a spell for a pain free root canal that not only benefited the princess but also a friend of mine, Lyra Heartstrings."
The crowd stomped their hooves in delight and Colgate continued, "Regarding vanquishing two of Equestria's foes...." Colgate became increasingly nervous and could not come up with any kind of lie so she decided she would take a huge risk and tell at least a half truth, "I had a feeling they were planning on attacking and I was right so I used a spell to banish both of them to the void."
Nopony, not even Twilight had any idea what the void was but they had a feeling that because of Colgate, that they would no longer have to deal with those foes. The crowd began to cheer loudly and all three princesses had shocked looks on their faces. They knew that Colgate was incredibly nervous but they had no idea that she would reveal her banishing of the two villains to the void.
Once the crowd quieted down Colgate continued, "And since there were dissidents in both what used to be Sombra's realm and the Changeling Kingdom, I was able to put new leaders in power, leaders that will be our allies, not our foes."
Again the crowd began to cheer and Colgate began to think that perhaps this ceremony wouldn't go so bad after all until a pony in the crowd asked, "If I may ask, why are you so big, why does it look like you're glowing and what is that heart? Why does it look like it is part of you?"
This caused Colgate to freeze. She knew she couldn't be truthful about any of that so she had to come up with as quick of a lie as she could, "Well I just grew when Celestia ascended me and the heart, well, well....."
Celestia would step in to save the new ambassador, "The heart is a mysterious thing that formed when I ascended her. Why she grew so much, why the heart formed and why she has a bit of an aura is beyond anypony's comprehension but I do ask that you don't question her over it."
At first the crowd went silent before one pony asked, "Colgate, what about your practice? I have an appointment on Monday, will you still be seeing patients?"
"Of course I will." replied Colgate. "I may have things coming up that will cause me to have to reschedule appointments given my new role but I will still see patients as I always have." She then got a smile on her face and added, "And if you need a root canal, I will use my spell to make it pain free at no additional charge!"
When the crowd saw her smile and heard her offer, they began to cheer. Colgate was smiling as were the princesses. Celestia leaned over to Luna and said, "Well I guess this turned out alright after all."
Luna replied, "I do worry about her revealing some things but perhaps it was for the best she did."
After a couple of minutes of the crowd cheering, Colgate headed back into the town hall and was followed by the princesses. Celestia was curious about something, "Colgate, I know you were nervous but why would you bring up the banishing of Sombra and Chrysalis? I didn't think you'd dare mention that."
Colgate replied, "Look, I'm not a good liar and the truth just came out. Besides, the news seemed to make them happy and it likely made my Alicornhood more legitimate in their eyes."
Celestia said, "Perhaps but now for another thing that needs to be done, we must present you to Equestria in Canterlot as well."
Colgate had never been overly fond of the ways of Canterlot, particularly the higher class ponies that may be more judgemental but knew that this was something that would have to be done. She asked, "So do I simply tell them the same thing I told the ponies down here or do we need to come up with some sort of script for me up there?"
Celestia replied, "Well normally in your situation I would say that we come up with a script but we can't have conflicting reports about you coming up so we will simply let you tell them the same, or at least mention what you feel comfortable bringing up."
This caused Colgate's nerves to lessen some, "Alright, well I'm ready for this whenever you are."
Celestia suggested, "I think this would be best done next weekend because with tomorrow being Monday, I know you have appointments scheduled and I'm pretty sure you don't want to inconvenience anypony."
"You know me all too well." replied Colgate.
Initially ponies felt a bit uncomfortable around the much larger Colgate and so many of them wondered how Colgate got that heart into herself and why it seemed to give her an aura. Eventually though everypony did adjust to her new form and felt as comfortable around her as they did before.
Transitioning into a normal life, well as much as it could be normal, as an Alicorn was not all that hard on Colgate. She ran her practice as she always had for the most part, enjoyed her trips to the Changeling Kingdom and the Kingdom of the Dark Unicorns and once she felt the time was right, she convinced Princess Celestia that the time had come to open up relations with other nations, nations that would be major players in the future.