Glad things have improved a bit. You might want to start looking at what you will do when she asks to come back again, which I think she might do, given her history.
Changing the locks was a good thing. When my 80 year old mother died, I was advised by the hospice people to change her locks immediately as they said people start coming to see what they can get their hands on. I did it and was one of the best moves I made, as people did start going to her house to try and get in. She had given keys out to many people so they could come in anytime to help her.
Best of luck.
