Hogwarts

You are Harry Potter's sister, one day when Harry was sitting with his friends in the great hall, a letter came to him, when he opened it, his eyes widened, the letter said that you were now studying at Hogwarts, when Ron, Hermione, Fred, George read it, they turned to him.
Fred: You didn't tell us you had a sister.

Ron: How can you hide something like that?!?

Hermione: Ron, calm down.
Draco, who was sitting with his friend, heard this. Pansy, Tom, and Blaise laughed.
Draco: Potter has a sister? Hah.

Tom: Probably like him, bespectacled and unlucky.

The others laughed, even Snape.
Harry: No... You don't know her...

Harry knew you too well, you were a very cunning and smart girl, no one was more cunning than you, you could control everyone and decide everything yourself, you always knew all the secrets and had a very good command of magic.

Pansy: What? She's probably a real nerd.

Fred and George looked at each other and then at Harry.
Fred, George: Don't worry, we'll take care of him, we won't let anyone hurt her for her looks.