I'm sorry that happened to your mother, but I have to disagree with the idea of being nosy, if a person seems to be capable of living on their own. It's one thing if you've seen evidence of problems, but if not, you have to go on trust. Everyone deserves privacy, and some of us can't live or function without it. Just because you're worried about someone doesn't mean you have the right to invade their privacy. If you're talking about a hoarding situation, it can be destructive to empty out and clean up their home without the aid of a therapist and the victim themselves; the victim needs control, or you end up hurting that person.