Dublb & QE your advice is spot on: go to her world. I've heard family members yell at patients to "snap out of it" or "you remember, you just don't want to". It's a sad, sad disease and takes the patience of a saint to deal with on a daily basis. Hopefully her caretakers get breaks and get away for a "sanity break" for themselves.
While cleaning out my mother's house, I found an old telephone in the basement with a rotary dial. It was so heavy-all metal. My grandkids were fascinated by it--had never seen a rotary dial phone before. It even had the old phone number on the front: 966-M. Wow, long before the days of area codes and speed dialing LOL. I also found an old manual typewriter that would probably still work if the ribbon wasn't dried out. Little round keys with letters--it's so cute I have it on a desk (that was mine when I was little) in my sunporch. Can't wait for grandkids to see that--they'll wonder where the screen is LOL.