My axw was hospitalized for 10 days with ascites related to her drinking, a few months back. Yeah, after all she's put everyone through, I won't lie, I had thoughts of "get on with it already". I don't feel a speck of guilt either, I'm happy to report.
I'm really relieved and impressed to read that you didn't cave to the pressure from your MIL to take him into your home after his release. Good job, and you are exactly right, your and your daughters needs come before his. He's done this to himself. I'm sure if he was suffering from some other "disease", and you weren't already separated, things would be some different.
You are being a good Mom, keep up the good work. Please take care of yourself, so you can better serve the needs of your little girl.
Thanks and God bless us all,
Coyote