Randy,
You might want to check out this website:
https://www.alzstore.com/please-be-patient-alzheimers-cards-p/0187.htm
My wife had Alzheimer's Disease. She recently passed away. But years ago when we were out, for example in a supermarket, at times she would make some unusual comment or behave in an unusual way. I would hand the person, who was wondering what was going on, a card that said something like, "My companion has Alzheimer's Disease, please be patient with her!"
That had the advantage of not embarrassing my wife with a discussion with others about her condition.