P.S. When I reread your post, I realized I forgot to tell you how sorry I was about this all making your mother cry and your father upset.
So much involved in all that.
But I do think (from experience) they would BOTH be happier if she wasn’t constantly receiving the “new” information that her parents were dead and he wasn’t constantly feeling like he had to be the bearer of that bad news.
Her brother has been dead for about 10 years and when she asked, "Where is Glenn?" I lied! I told her he was at the store. Pacified her. We "played that game" at least 10,000 times over the years.
Attitude is EVERYTHING! You can enjoy the ride or let it drive you crazy!
I have help 7 days a week and am able to get out when I want to. That is a big help. Everyday we find something about my mother to laugh about.