ARGH! This Girl In School Is Pissing Me Off....I Hate Her! PLEASE HELP!?

Such people are only trying to get reactions & piss you off more. The best way is to ignore her facebook comments and if she tries to pick fights in cl, make a joke & laugh it off. People will start seeing her as the one who doesn't get over her issues, keeps hating for little reasons, jealous, pathetic & sad. You just play cool, pretend like you don't even know that she has a problem =)