My 88 year old dad's caregiver has moved in with him and now says she is going to stay when he dies.

He acts completely helpless around her, when we come she leaves and goes to see her kids and then suddenly he can do things for himself. She has got the innocent act down, but she is 60 and he is 88?

She has made herself at home in the room my stepmother died in.

He sleeps all day, does not drive anymore, and drinks. My concern is she's taking advantage of him.