Trixie's mouth was agape. "TRIXIE HAS AN ACTUAL SISTER?! But- But- But... Trixie lived hery whole life in the Canterlot orphanage! Trixie didn't have a family at all!" Her new father smiled happily at her.
"I had read in the newspaper a long time ago that a malicious criminal had been caught and they sent his child to an orphanage. I had always held out hope that it was you because I didn't want you to be dead and thinking of that possibility hurt way too much. I think that this was what happened. Nopony can be sure about that, but I know for sure that you're my daughter. You have your mother and I`s wonderful, blue coat and your light purple eyes from your mother. Your mane was a mix of both of ours. Trixie, you are my daughter for sure." Trixie cried tears of joy and though her hooves around her father.
Trixie had never felt so content. Finally, being in somepony's warm embrace lifted her spirits. Her job as a performer left her with little to no physical company and her personality got rid of anypony who dared to make friends with her.
Meanwhile, Twilight had a look of anger on her face. "OUT OF ALL PONIES, IT WAS TRIXIE! IT JUST HAD TO BE TRIXIE DIDN'T IT?! SHE IS EVIL! SHE TRIED TO TAKE OVER EQUESTRIA AND IS A TOTAL LIAR!" Trixie grimaced.
"WELL YOU ARE JUST AS BAD, YOU PEST! TRIXIE JUST GOT REUNITED WITH HER DAD AND-" Twilight shoved her lavender hoof in Trixie's mouth.
"YOU DO NOT GET TO CALL HIM 'DAD'!" Nightlight closed both of their mouths with his magic.
"Both of you! You are sisters! You should be happy! Twilight, I thought that you were trying to make new friends. So, then why are you being so very rude to your sister Trixie?" Twilight stomped her hoof on the floor extremely hard.
"Rude?! RUDE?! B- B- But… SHE'S THE RUDE ONE! She banished me from my home, nearly killed my closest and best friends and I and she even has an ego so large that I am surprised that it hasn't crushed her yet!" Trixie's eyes glowed pure white as she combusted. She too had the ability to burst into flames, it must be a family thing.
"TRIXIE IS THE BEST PONY THAT YOU HAVE EVER MET! TRIXIE IS THE BEST BEING THERE HAS EVER BEEN! TRIXIE HAD MORE TALENT THAN YOU WHEN SHE WAS JUST A FOAL! YOU PUNY PONY HAVE YOUR FRIENDSHIP! TRIXIE HAS THE BEST MAGIC EVER TO BE SEEN BY THE PONY EYE! SHUT UP ABOUT ME! STOP COMPLAINING ABOUT ME! AS IF YOUR LIFE IS SO WONDERFUL! YOU HAVE DISGRACED YOUR... SISTER!" Twilight sent Trixie flying hard against the wall and into the bookshelf due to a blast of powerful magic.
Oh great, now I have to reorganize the books too! Trixie tried to get up, but Twilight threw her against the floor right away. Trixie got up and stepped right in front of Twilight and head-butted her. As she fell dazed to the floor she grabbed her by the neck and threw her with her magic.
Twilight and Trixie began using super dangerous magic against each other and neither of them knew how far they would go. Nightlight was just so stunned that he could barely think or see straight. His two daughters who should be extremely happy were just about killing each other which they could easily accomplish if one of them were angry enough.
"STOP!" The two furious mares stopped to look at him. He was filled with rage and despair. The look of disappointment in his eyes was enough to break her. Twilight's knees buckled and she fell to the floor in a mess of tears.
"I- I- I'm just so sorry. I'm j- just so sorry. So, so, so sorry... daddy. Please… don't hate me. PLEASE! P-Please..." Trixie actually felt a little bit of sympathy, but quickly dismissed the feeling because it was decided in her mind that these feelings were misplaced.
Nightlight slowly walked up to Twilight and Trixie. He looked at both of them and then used his magic to throw them onto the couch.
"You... are sisters. You need to love each other. Whatever..." He looked between the two of them. "...this is, it's going to end here and now. I do not care what happened in the past. I love you both very much." He gave Twilight and Trixie a kiss on the forehead. The gesture broke one of Trixie's many walls covering her nearly black heart.
The day's events finally caught up with Trixie and she burst into tears. She threw her arms around her father and smiled slightly. "The Great & Apologetic Trixie will try to calm herself a bit. But, only as long as that jerk Twilight promises to stop ticking Trixie off." Nightlight tried to ignore the rude comment about his daughter and looked at Twilight with pleading eyes.
"Trixie, I definitely do not forgive you for what you have done and what you will do, but I will accept you for who you are. Oh, and no, I will not stop pestering you, by the way." Trixie frowned at her.
"Egghead!"
"Liar!"
"Teacher's pet!"
"Wheel hater!"
"Dragon lover!"
"Evil enchantress!" Nightlight sighed and put his hooves over their mouths.
"I thought that I told you young mares to get along!" Trixie half heartedly hugged her sister, as did Twilight.
"Humph!" Trixie walked away semi angrily with a devilish grin on her pretty face. Twilight sighed quietly and then turned towards her father, Nightlight.
"Well, that's Trixie for you, I guess!"