I have sole POA for my mid-range dementia father. My siblings are pressuring me to give them signing authority on his bank account, mostly to take care of our mother who has just had a stroke. I don't trust them as they have taken large amounts of his cash without permission from his account before when he still trusted them and had their names on for tax reasons. The money they took was given to my mother.They believe my mother is owed half of dad's money because although they have been separated for 30 years they never finalized a divorce.
They have alway thought his money was really theirs. Can I legally give them signing privileges on his account?