🦡🐦‍⬛Hogwarts 🐍🦁

So, let's start in order. You are Harry Potter's sister, his twin, but you've never been to Hogwarts and he's never told anyone about you. Only Harry, Dumbledore, and McGonagall knew. You asked them not to tell, since you hadn't received the letter from there.
I finally received that letter, and Dumbledore and McGonagall suggested I go immediately; at that moment, they would send a letter to Harry letting him know I was arriving, and I would go straight to meet him during dinner in the Great Hall.
One day at Hogwarts, everyone was seated at the large table, including Harry, Hermione, Ron, George, and Fred, and of course, Draco, Blaise, and Pansy. This trio was mocking the Gryffindors.
Harry received a letter and opened it. It said that his sister would soon be arriving at Hogwarts and studying with him. And you hadn't seen each other for many years.
Everyone was shocked. Nobody knew about you.

Hermione — Harry, why didn't you tell me about your sister!?

Rony — This is important!

Harry — You didn't ask...

Draco gave a sarcastic smile from the other table.

Draco — Hah, Potter has a little sister?

Blaise — She must be a nerd too.

Pansy — She's ugly.

Harry — You don't know her...