I agree with
>>2 and
>>3 however I think that it is important to add that if and when she does come back and tries to be your friend, it may be weeks or it may be months, however it is up to you if you want to forgive or if you want to forget. You could put up with her actions and welcome her with open arms or you could just be over the whole thing. However, she made her decision and there may come a time when you might have to make yours so keep an open mind and remember that you are an individual with your own decisions.