Thanks for the replies...
No she hasn't been diagnosed as bipolar, even though I'm sure that is what she is. She has been diagnosed as severely depressed. She won't go to therapy. One time a long time ago we went to marriage counseling and she felt like the doc was just picking on her. Ever since then therapy has been out of the question, especially if I am involved. It took me a year and a half to get her to go to the doctor she sees now.
She does have a part time job, so it's not like she is cooped up in the house all the time. I guess I could have explained that a little better, but I felt like I was starting to ramble.
I'm sure it will eventually all work out. It's just hard being in the trenches every day, never knowing what to expect.