I wouldn't necessarily leave her alone. But like I said, talk to her about it when she's in a good mood and tell her your wishes. When she's in a bad mood, there's only so much you can to do help the situation.

It's hard not to take these things personally. You have to realize too that in order to love someone else, you have to love yourself first....it sounds like she is having a hard time doing that?? If this is the case, be extra patient with her. Try to be as good of a boyfriend as you can.

Stay occupied. There's no rule that says you can't be happy if everything isn't going great in a relationship. (easier said than done) but no really, you can still be happy even if things aren't exactly awesome. Don't let the situation rob you of your own joy.