I'm not suggesting you call her gp, but sounds like she might need a psychiatrist and psychologist to help her better manage her bipolar... You could perhaps post on the bipolar forum to gain additional insight from people who are dealing with it.

Good that you are taking steps to manage your anger... is there any possibility of your getting a psychologist, too?

Or maybe a marriage counselor for both of you?

Remember there is 211 to call, as well.