This may have been covered before-I'm new.
My father-in-law lives with us, and we have a wonderful caregiver for him while we are at work. Is it normal/natural/ok if he has begun to think she is his wife? I've read on dilusions, but the only ones I can find are when they show anger. He is just the opposite (very lucky so far). Should we just let it be, or other options??

It's fine. It doesn't seem to be distressing to him, maybe even makes him happy. Sandra Day O'Connor's husband thinks a resident in his NH is his wife.

I thought the same thing, but thought I would seek others thoughts too. Thank you! We have a nurse that comes in once a week, so I may try to call her as well. Every day is new and different since he has moved in, and I just want to make sure we are doing the right things, not to damage him in the future (mentally). It's rough!

Not at all unusual to confuse a caregiver with another family member, even a spouse or child or other very close relative.

No need to be alarmed or to correct him. Just go with his flow.

He may not always think she's his wife - it may come and go - so just be ready to get a strange look from him if you refer to her in a way that doesn't match up with "today's" idea of who she is.