I'm so sorry about your girlfriend. Sometimes all the hurt is just to deep rooted. I agree with everyone else though. You should just sit her down. Tell her you love her. If it get to it beg her to see help.
Especially if it's getting worse you may not want to leave her right now. I'm not saying that you have to stay with her. Do what makes you happy and healthy but I've read your posts and You seem to really and truly love her so you need to keep sane. For the both of you. All you have to do is keep trying.
I know your doing everything you can and that's all she needs. You can't push her to do something if she doesn't want to do it. She has an amazing support system.
Good Luck. I'm going to stay updated with this post in case you might need more help.