As hard as it is going to be, try and let your partner know how you feel. Maybe if she feels more comfortable maybe you could send her an email to crack the ice? Or just print out your post from here? She is obviously in a great deal of pain and is pushing you away.

Maybe she isn't ready to deal with it yet. If not, try and let her know you care, and then drop the subject. Sometimes we can push people away.

It is a hard to know what to do. I wish I could be more helpful. Maybe she is angry with her mother and misdirecting that anger back at you? Ask her.