Sounds like my mom, in laws aren't to bad yet.
Your at a tough time there my friend hard to deal with senile people or dementia or what ever they get. Do me a favor and just shoot me at that point hate to be a burden on my kids.
Maybe try to tell her how much fun she could have in assisted or retirement home being around people her age. Bingo every night wheel chair races, I don't know but been on my mind with my elders.