Honestly, this sounds almost as though my husband had written this thread. All that you're going through with your girlfriend, we went through, very recently too... right before AND after we got married.
I lost my health insurance and had to drop all the medicines I was on because we just can't afford it. I have been going through one emotional hell and bringing my husband along with me.
All I can say is the one thing that my husband has said to me that makes me feel better is that he loves me for who I am, regardless of weight, hairiness, emotional outbursts, unwarranted and undeserving anger and hatred toward him, and literal meltdowns. To hear this while he was lovingly stroking my hair and holding me meant the entire world to me.
We went through couples counseling and it truly did help us a LOT. I am like your girlfriend in that I shut down and internalize all of this hurt, frustration, exasperation, and I refuse to communicate with my husband. Couples counseling is what we really needed to break down that habit and get me talking, and, that, in turn got my husband feeling a little less of an emotional punching bag.
I don't know if that helped, but I sincerely wish you lots of good thoughts and wishes. It can be difficult, frustrating, and leave you wanting to throw your hands up and say, "I'm done," but don't give up just yet. I also hope your girlfriend has a better experience at the health center than she has on previous occasions. | 
