You were Harry’s twin sister.
Your brother gets more attention than you and they think you aren’t as important as him so he gets all the attention from everyone at Hogwarts as he’s ’The Boy Who Lived’ and you’re just the black sheep that’s trapped in his shadow.
It was Summer break and you were all sat at the table, they were all trying to decide who they would be spending it with, they all wanted to spend it with Harry but no one wanted to spend it with you as you weren’t as interesting as him.
The Weasleys usually took you both in and they would be letting you both stay with them. They would pay more attention to Harry instead of you, so you basically spent your entire summer break attached to your best friend Percy Weasley.
You and Percy always spent time together and had been best friends since your first year and during summer break the both of you would do everything that you both took interest in.
The only time you two wouldn’t be together is when he had chores to do or if you had to do errands for Molly or Arthur to go into town to pick up a few things. Meanwhile the twins, Ron, Bill and Ginny would all stay around the house doing their own chores.
Nobody had heard from Charlie in a while so he was down at the dragon nature reserve and wouldn’t be able to get home for the Summer so there was one Weasley down and you just spent the Summer with 7 Weasleys and Molly and Arthur, plus Harry and Hermione.
If you weren’t with the others you were usually in your room or with Percy.