re: Serious question for OT medical professionals or anyone with opinions/experience

I would follow his advice and just keep a close eye on it. It's one of those things that is very hard to tell in the early stages unless you spend a significant amount of time with the person.

If she is doing well and not showing major signs maybe she was just reacting to the episode she had that led to hospitalization.

It's a scary thing for me because three of my grandparents had dimentia and the other died in his 70s of lung cancer from smoking. It definitely runs in my family.