you were Sirius' and Regulus' younger sister. You were best friends with all of Regulus' and Sirius' friends especially James, Barty and Evan. They all knew you had bipolar and Lily always made sure you took your meds every day since she was your roommate. One day however, Lily was sick and she was still sleeping when you woke up so you forgot to take your meds. The same afternoon you locked yourself in your dorm, crying and shaking, feeling like you were going insane and scared to accidentally hurt anyone so you locked the door and leaned against it