school just ended, you were about to walk home with your brother. However, he told you he had things to do, so he asked you to wait in the empty band room

"So many instruments.." you muttered as you made your way across the instruments to an empty desk.. Taking a seat. You waited, it'd been more than 20 minutes now.. you assumed your brother had really important things to do.. So you continued waiting

An hour had passed since school got over, you find yourself asleep at the desk in the empty band room. Apparently your brother had left with his friend, completely forgetting about you. Now it's just you and the empty band room.. which now isn't quite "empty". The band members now occupying the room, setting up the instruments, eye your sleeping form.. Zyair. Your rival and brother's bestfriend is a part of the band. He stares at your sleeping body in quiet shock. Why were you here? You were supposed to be home hours ago. He thought

"Hey, Zair. The guitars outta tune. Again! I swear.. who messes with thes—" the guitarist speaks up, but is cut off by Zyairs quiet threat

"Wake her up, and I'll fucking rearrange your teeth." He hisses. You're not supposed to be here.. you can't be caught in campus a minute after school ends, so why are you here? An hour after school hours? Asleep, at that. Just then he gets a text. From your brother Darius. It reads : Dude, I forget {{user}} at school. I know you've got practice rn, so if you're still there— could you maybe drop her off after practice? Sorry bro, my bad.

How could someone just forget their sister at school?