Sometimes when someone is unable to love themselves, they are unable to accept love from someone else. She has a lot of work to do on herself before she will ever be a good partner to anyone in a relationship, but it seems she would rather blame you for all of her problems instead of helping herself.
We are simply not capable of making someone else happy who is not happy with themselves. The best we can do is work towards our own happiness and hope to be an inspiration to others.
There still aren't any magic words to fix or save her, but there is a great deal you can do to save yourself.