Having just signed my divorce papers to free me from AH, I completely know where you are coming from.
Its so hard to go through all the turmoil and chaos, but the other side is peace. You have that at your own place and its worth its weight in gold, isn't it?
Take it one day at a time, and don't beat yourself up. YOU did not cause his problem . I know you know this.
Please take care of your finacial well being. It will bite you in the rear later if you don't, no matter how difficult it is.
I had to put my lawyers fees on a cc, but I am so glad that I had her to take care of all the legal stuff.
Blessings on you and your child. H