You do nothing "for" her, just for you. Her family, her ex-sponsor, they are all aware of her problem. You are still trying to fix her. You are still thinking that if you can just DO something--figure out what it is that she needs--she will get better.
That doesn't work. She KNOWS what to do. She was in AA and had a sponsor. The tools are there. She has to pick them up and use them. You can't do that for her.
Your JOB is to take care of herself. I suggest that you ask one of her friends to pick up her stuff so it is out of your house. And then go on with your life. Al-Anon, or therapy, might help you get on the right track.