Hi @Tru3man, it does sound like a tough situation right now, especially when family and money are involved. Firstly, it's great that you are getting the medical care that your mother needs, however, you will need to work out a plan with your mother's doctors to see what the best way is moving forward, especially with her dementia and vulnerability being alone.
Do you have a family lawyer that you are able to chat to about the situation with your family member and the "loans" that have been taken out?