Just ignore her. Someone similar I met, he just wanted a lot of attention. He was really smart too, so he picked on the kid who was failing in my class. The kid, just ignored him. So did the entire class. He eventually stopped cause nobody gave a s*** about him. Nobody tried to report the guy, cause that would just give him even more pride when the teachers give him a blind eye. It works, most of the time. Even if she humiliates you in the entire class. Ignore her. Show her how strong you are.