Seriously get rid of her!!!! Who cares if the other girls wont talk to you that means they werent your true friend in the first place, you can make many more friends!!! She seriously needs help. why not talk to the other girls about and maybe they feel the same way you do... Even if you have to go to her parents or even her and talk about it tell her how you feel and if she doesnt like it then whatever your better than her anyway then!