That's too bad Kenny. I've not had to deal with that scenario yet but my mom and dad have been taking care of my mom's parents for a LOOOONG time. It started when my grandfather had a couple heart attacks and ended up with Alzheimer's. My grandmother has never had a drivers license and couldn't take care of him by herself so she asked all the kids who would help out. She told them all that whoever was willing to care for them till they died would get the farm. My mom was the only one to volunteer. Honestly, at the cost of nursing home care it was the best deal all the way around as the money from the farm would have only lasted a couple years and grammy is still going. It's been a heck of a burden with plenty of "horror stories" but they were able to keep the farm in the family. Last I heard, full time doctor assisted care nursing homes can cost well over $50,000 per year. That can suck up money from a farm sale real fast. Depending on your mom's health, it may be smarter to have the kids take turns caring for her or do as my parents did and have one kid take the burden and be compensated accordingly. It's not easy either way.
Hope you can work something out.