Drained,
Being back with your AH why don't you go back to school now and get your teaching degree? Let him pay for it, and it will give you something to think about other than him and his addiction. Don't want to sound harsh here, but it is a thought. This way you have a headstart on your future. You can still enroll for classes starting this month or the beginning of Sept. then apply to the college and you will already have some of the classes out of the way.
My heart goes out to you, my son is my addict but I was married to a lawyer so I know the games they both play. But with your AH both it makes it harder. The meetings are a good start, if you can go to others please go.
Feel free to get in touch with me at anytime if you need someone to talk to, maybe we could meet someplace for lunch one day.
Take care of YOU and your girls.
Hugs coming to you