Haha...I have had people come up to me and start convorsations...err...people I didn't know. And this old guy was talking about how much his mother missed me...lol. It was weird.
Sounds like she missed you a lot. Not surprising if she'd never met you. That's a total miss!
Poor old soul. Be kind, though.
When you look at some drooling, demented older person, picture them as a child of five, playing happily, without a care in the world. Maybe climbing a tree and laughing. Maybe riding their bicycle round the park. Then remember when you were that age and the good times you had, like that. Then look at your own future...