i would guess this is her way of saying she doesn't like you- at least not right now. this could be because she just thinks you guys aren't right for each other or because she is still stuck with feelings for the last guy she was seeing. but, when you are open and supportive and remain a close friend, a lot of times girls come around and see who really cares for them. just remain open- see what happens
ps girls love being called beautiful, any time, as long as you mean it