I'm sorry you have to go through that. Don't let anyone bother you, especially someone younger. Have a talk with one of your teachers or school counselors and see if they can do anything about it and help you out. If I were you, I'd do something about it. Get some of your friends to back you up and tell her off if she keeps bothering you every single day. It's really immature for someone to act like that and they need to learn. If you don't do anything about it, it'll make you look weak. Just tell a teacher or a counselor to see if they can help so all of this can stop.

If you need to talk, just feel free to IM me.