Dearest Princess Twilight...

The door slung wide open, and Twilight stepped in. "Your Highness... We weren't expecting you. Well, one of use were. Do enter!" Twilight smiled and bowed her head respectfully.

"Could I ask if it was Amethyst expecting me?"

"So you are writing letters to each other! She refuses to let us read them, something about 'Boundaries'. Would you like to see her?"

"Yes please." The mare lifted her right hoof and bowed, pointing at the staircase. Climbing up, Twilight noticed five or four young children staring at her, some whispering excitedly,

"Princess Twilight Sparkle!" The mare couldn't help but giggle. They climbed up to the roof, then up a set of ladders to get to the attic. There were two more rooms, one on the left and one on the right.

"This one, Princess... I'm sorry, but could you please wear this? To prevent germs spreading. See, we can't afford much more, especially not medication." She handed her a surgical mask. The princess nodded, threw it around her muzzle, and opened the door. Twilight couldn't help but cough, the amount of dust was unhygienic. She searched the whole room, but Amethyst was no where to be seen. "Oh, I'm sorry. Amethyst is up the  ladder probably." She knocked on the roof of the room. A trap door opened, a ladder opening up with it. Tonnes of books dropped as it did.

"Ponyfeathers." A young, cheery voice echoed through it. They were lifted up with a lilac aura. An extremely light blue unicorn with lilac hair tightly stuffed into a pony tail, held together with an indigo ribbon. She paused, looked at the princess, and for a second it  looked as if she was going to go unconscious.

"Are you okay?"

"I... Princess...You came?" Was all she could say. Twilight nodded happily in reply.

"Here, it's a letter for you." She smiled as she levitated the parchment to the little filly. Amethyst quickly lunged at it and read it within seconds. She began to tearfully whisper, then pulled Twilight up the ladder. Closing the door when they were up, Twilight stared in awe at the amount of books there. "Wow! You must be the spoiled one!"

"No. I guess my family felt bad for me when giving me to the orphanage and payed for the most expensive room."

"Your still planning to go look for them?" There was a moment of silence when she nodded.

"I feel like they're closer than I think. Hey, we have the same highlights in our hair!" Amethyst was indeed correct, for a hot pink and indigo stripe was on both their manes.

"Maybe we're sisters!" Amethyst jokingly claimed, suddenly going quiet, "Twilight, I know this sounds silly... But can you be my sister for the day?"

"Sure! It'll be fun, I need company anyway."

"Really?"

"Mmhmm." Amethyst's green eyes sparked, and her joyful smile looked as if it could burst. She grave a deep breath and closed her eyes, looking like she was in a deep trance. An annoying image of Pinkie Pie appeared in her mind.

She's an evil enchantress, she does evil dances, and if you look deep in her eyes, she'll put you in trances! Then what will she do? She'll mix up and evil brew. Then she'll gobble you up in a big tasty stew... So-

*Shut up Pinkie* Twilight thought aggressively.

"So...what do sisters usually do?"

"You don't know? Oh, well... Would you like to read a book?"

"I've read every single one you see here."

"Alright, this one then?"

"Great!" Twilight pulled out the new edition. She slung open the book cover and began to read.

"Daring Do And The Amethyst Temple."

                                                                                                             ~~~

As the princess ended the book, she looked at Amethyst who had her cheek rested on her body. Twilight gave her a little nuzzle. She had never seen a single pony with the same. Highlights as her... It was like a birthmark. She was going to complete a test because maybe, Just maybe, that pony is a relative.

Her aura enveloped over her horn, and a shade of purple grew until it was covering it. Amethyst's lilac aura shone too, and Twilight placed her horn on Amethyst's. If they were related or had a connection, a spark of magic would appear. Sure enough, a spark of magic appeared. Amethyst was Twilight Sparkle's little sister.