My Relationship with My Bipolar Spouse

I was driven to the point where I had to leave bcause of the arguing and the continuing mental and emotional abuse. I stayed at the Red Cross Shelter overnight and she wanted to talk about what we weregoing to do. She said that thing would change and after retuning home they just changed for about a day. I asked her not to promise me anything that she could not really do because of her illness but , she said that she could do it. I am preparing myself for what ever happens but if I have to leave again this time I am not coming back. Seven years of this is enough and I have to save whatever is left of myself and carry on with my life...