Full-Time Scam
There’s nothing worse than when individuals try to take advantage of others who are in some way vulnerable. People should be compensated for doing a chore if they are being paid for it.

I’m sure she needs full-time care, but it isn’t enjoyable to try to deceive someone into providing that. Asking someone to pay for board and rent when they aren’t being compensated for their job is a deceptive way to do things.