What should I do about this "friend" situation?

in my honest opinion, i think you should just leave her behind. she is just bringing negativitey to you and it kind of sounds like you are just using her for rides to and from school. find another way to get to school and home again because if she does that to you it isn't fair. no one should be treated like that. but if you think that you should still be friends with her, then do so. but honestly, she's just bringing you down and she is something that you go against normally. so find some new friends that won't treat you like that and find some friends that you acutally enjoy spending time with.