What would you do if your friend........?

It's good you're aware of her behavior and that you don't wanna be around her anymore. Most of the people in here that have problems with their friends have a hard time leaving this kind of "friendship" although they know It's not a real friendship. So good for you. What you should do is ignore her: that way you'll forget about her quickly AND make her angry cause there's nothing like wanting the attention and not getting it... If she sees you're bothered by her and that you're jealous or anything in that matter, then she's done her part and her plan is working. So from tomorrow, don't pay any attention; If you see her looking at you or trying to brag, look the other way and go to your other friends. Just have fun, that'll do the work!