That is so sad, Bike Chick. I am really sorry. I know 75 years old might sound "old" to some on here, but my mother is 77, and although I have complained here before about her not being willing to "exercise", she does at least garden, go to the grocery store, cook (she still has dinner parties relatively frequently), and her health is actually quite good despite being overweight. She sits a lot (reading), but is still quiet spry for her age. I think she would feel even better if she'd at least take walks around her neighborhood, but it is quite hilly, and she just won't do it.
Compared to your mom, she is in great shape. Hearing your story reminds me of how much worse it could be. My grandfather got like that too, but not until his 90s. He had Alzheimer's and fell down and broke a hip. After that he had to go from assisted living to a nursing home, and basically just waited for about another year, year and a half to die. He had no motivation for PT or to do anything but sleep. It was very sad, but he was 96 when he died, so a bit more understandable. It's too early for someone of 75 to be like this, I think!
I wish you the very best. It must be very hard.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow