Try talking to her and tell her how you are feeling, if she doesn't care about your feelings then still be there for her, because sooner or later those "cool" people will get her into some trouble or something worse God for bit. and she will go running into your arms begging you to forgive her, since you have always been there for her like a true friend. and if still doesn't work then she wasn't a true friend. don't worry you will find more friends sooner or laterr, maybe even better ones.
ashleynicolle