C.B.
My sisters and I are going through these changes with my mom as we speak. Mom lives alone in her house and has gotten really bad with memory, confusion, bills, etc. And she doesn't realize or is in denial of her situation and that we're not ganging up on her but trying to help her with some of the things that require too much remembering.
Have you contacted A Place for Mom? Go online and connect with them. They recommend such places that have round the clock medical staff, but have a workout gym, activities, transportation, and maintain a sort of independence with the person's own flat. There may be some initial squawking, but it's also the case that once living there, they make friends, their brain stimulation improves, and they enjoy it. There's the Henry Ford or Fox Run retirement centers. But if you need personnel on the site for emergencies I would go with A Place for Mom.
Good luck!