Back in the conference room Rarity is watching as Nightmare Moon is trotting away. She quickly packs all her stuff and begins to leave the chamber. Most of those present have already left the room and Rarity has to quickly speak with someone and this might be her only opportunity to do so because she spends most of her time in the Crystal Empire as its governess.
Rarity is galloping through the hallway looking for her target but she can't find her anywhere. "She can't have left already can she?" Rarity thinks. She quickly continues her search. Luckily the element of generosity has some luck at the entrance General Stars Whirl, commander of the armed wing of the Disciples of the Night, and the one Rarity ones to speak with is about to enter her car.
"Do you have to leave already? I was hoping we could speak. I was told you where interested in buying a new dress." Rarity says while putting on the most innocent smile she can manage.
Stars Whirl raises an eyebrow. She most definitely isn't interested in dresses, everyone knew that, and although Stars Whirl had never met Rarity personally she did know about her reputation. Apparently Rarity had been able to proof that Wind Rider a former Wonderbolt had framed another Wonderbolt, whose name Stars Whirl forgot, for a crime she didn't commit by simply hearing about a cake or something like that.
So surely someone as smart as Rarity would know that she didn't like dresses. "So either Rarity is really stupid or she doesn't want to say what she wants to talk about in public." Stars Whirl ponders.
"Sure why not I. How about we take a nice stroll around the premises" Stars Whirl answers in as sweet of a voice as she can manage.
The two mares begin their walk around the castle. The Everfree forest used to be a terrible place with many monstrous creatures wandering around, waiting to pounce on any pony or other creature that dared to enter. There where even stories of the trees absorbing residual magic and becoming alive. But when Nightmare Moon decided to turn the Castle of the Two Sisters into the new capital she expelled the residual magic and had her armies drive away the animals.
Now the Everfree forest is a place of peace and calm with only the sounds of Owls and Nighthawks filling the air. After a nice and peaceful walk, Rarity and Stars Whirl reached a bench along their path. The general sits down while Rarity first takes a good long look at her surroundings before sitting down herself.
"So why are we really here?" Stars Whirl begins.
Rarity takes a deep breath and looks Stars Whirl straight into her eyes.
"Starry Glory is an out of control fanatic who if given the chance will ruin the Lunar Empire and our empress. We need to make sure that cannot happen."
Stars Whirl is completely stunned when she hears Rarity speak. Yes she also has her doubts about her former colleague but she is also a loyal soldier.
"What you are suggesting is treason!" Stars Whirl hisses.
"Is it really treason to protect the Lunar Empire? Besides I am not going to have him illegally assassinated or something like that. I am just saying that we need to keep an eye on him and be ready to warn and protect Nightmare Moon if he tries to take control himself." Rarity answers without a hint of doubt in her voice.
"No Rarity, we either stand together or not at all! We may not like him but if Nightmare Moon has faith in Starry Glory then I will trust her judgement. Besides, we can't just spy or plot against someone simply because we don't like them." Stars Whirl says stoically while standing up.
As she is walking away she can hear Rarity pleading to her.
"But what if you are wrong? You know just as well as I do how much influence the batpony supremacists have in the government. What if he decides to enact all the speeches he has written about cleaning Equestria of the pony filth?. What if he decides that he is right and Nightmare Moon wrong!"
But Stars Whirl doesn't listen and as she leaves Rarity's field of view, Rarity realises she has made a huge mistake.
"I really thought Stars Whirl would understand." She sadly thinks to herself.
Rarity had heard of Starry Glory long before the civil war. He was featured in almost every newspaper in Equestria when he wrote a book called: The Free Thestral Empire, in which he called for the foundation of a new country only for batponies. In this new country of his the entire pony population would be forced to leave or be expelled with violence. Because of this book he was sentenced to a three year prison sentence.
When the civil war began and Starry Glory and Stars Whirl founded the Disciples of the Night in the southern jungles of Equestria, it didn't take long for rumours to start trickle north about how Starry Glory drove away the original pony population in favour of batponies and how he tried to have everypony who he deemed supporters of Equestria killed, it was only due to an intervention by Stars Whirl that he didn't get his wish.
Rarity gets up and slowly slums back to her car. She knows she is done for, Stars Whirl will report this conversation to Nightmare Moon, Starry Glory will find out about it and push for her removal from office or possible even have her executed. Nightmare Moon won't be able to resist out of fear of losing the support of the batponies and then there will be no-one standing between Starry Glory and taking over control of the Lunar Empire.
Rarity gets in the backseat of her car and tells the driver to go to the Canterlot airbase. From there she will take a flight back to the Crystal Empire. As the car begins to move a small smile appears on Rarity's face.
"At least I tried doing the right thing." she thinks.