I have never been in your situation, however I have been her, even though I'm a guy. When I was sick, I became a leech to my friends. I can admit it. I was BAD. Finally getting my life straight, but the last few years I bounced from couch to couch, job to job, friend to friend. I burned so many bridges. I have lost contact with several friends because of my leeching. I finally got on disability and things are improving. But I can feel your frustration. I felt it from my friends when they were getting to the point of telling me I have to go. They're is a tension that you can feel. I wish you the best of luck in handling this. It's true, her reactions and actions are not your responsibility, and if she ends up in a shelter, or back in the hospital so be it. You can't let it affect you or your children. My friends finally kicked me out and on very short notice. I survived, she will too.