The next time this girl in my class offers me candy I am going to refuse to take a piece.
Is there something about the girl that makes you want to decline the candy?
I don't like her. And I'm sick of her bitchy attitude
If you do not want to take candy from someone then you have the freedom to decide not to. If you don't like her then the best solution would be to avoid associating with her.
I want to kick her ass.
Not everyone has to get along, but inflicting physical harm on someone is wrong and could cause you a lot of problems. Your best bet is to just keep your distance and not let her occupy your thoughts moving forward.