I know this won't be of much help but it sounds as though you have found what works the best. maybe if you focus on doing them and trying not to do the things that don't work. Just be there when she falls. I know that sounds easy and I know it is not so. Have you tried talking to her about seeing someone? A doctor prahaps could help?
You are obviously a very caring person she is lucky to have you there for her even if at times she does not appear to appreciate you I'm sure she does.