What am I supposed to say to my friend?

Well..that isnt real good. Just try to be there for her, and comfort her. I would try to take her side and understand her more. Has she cried at all? Because if not, you should tell her its ok to cry. But being onlined schooled..I would try to talk her out of that, but if she is stuck on it..then I wouldnt argue. Just try to be a great friend, and make sure she doesnt go into depression. Have you tried to talk to her dad more about it?Maybe he doenst really get what is going on completely....