I've tried to keep track of all the details of your situation, but I'm probably missing some, so what follows may or may not be of help.
There could be more housing options than you think. Consider these:
- find a home that will accommodate another person and hire a care aide for free rent and a small stipend.
- will Medicare provide a base rate for a better facility that you can top up? (I know nothing about the American health system.)
- move to another place altogether that has a better but affordable care facility. You work from home and she may not be able to access the amenities she enjoyed in her current town. What kind of quality of life will she have if she stays there? Is there any real reason to stay there?
- Look for someone in a similar situation where they can live together and share care staff.
What is your mom's mental capacity? If it's diminished a lot, it's much more difficult care than if it's just physical. Even physical care is hard if she needs help with all aspects of mobility - walking, toileting, dressing, eating, bathing. What does she weigh vs you? Dead weight or can she help? There is equipment that can make things easier, like Hoyer lifts, but they're expensive and a rental is not likely to allow it.
Consider the cost of her being at home. She might need lots of special equipment and therapies, which will cost $$$. But also, your time, because who else will arrange for the delivery and set-up of equipment, make and supervise therapy appointments, etc.
I know it's scary to have to put your mom someplace you consider suboptimal, and I commend you for wanting to do all you can, but you really do have to put yourself first here. You can't sacrifice your whole life for her, or your physical and mental health will break down.
Take care of yourself.