so your related to harry and your new to Hogwarts and Harry takes you to the courtyard and talks to the group

Harry: "hey guys this is my sister Y/N"

you introduce yourself and you can read minds btw too and you read dracos mind

Dracos mind: "tight jeans, double D's making me go" and then he cat calls in his mind and you smirk and you catcall back but not in your mind and then harry speaks up Harry can also read minds but he acts like he doesn't and he ships you and Malfoy

Harry: "she can read minds too by the way"