You're being forced to pay a compassion tax that the people who don't want to change heath care in this country are never in a position to be forced to pay -- they're not hands-on landlords. The compassion tax is levied rather unfairly and haphazardly on people like us, as you can obviously see.
Here's my solution: find her a nicer apartment/house than the one you're renting her. The place should be closer to her care centers than your apartment or house. It should cost more to rent than what she pays you. Go to her and offer to let her out of her lease. Offer to subsidize the difference between your rent and the new rent for the next year. Offer to reimburse her for a moving truck. She hires it, sends you the bill, and you'll pay it. If she asks why you can't just pay for that moving truck, well, explain that the truck and mover's rental has to be in her name "for tax purposes." Trust me, she'll never ask what that means. Offer her the world, just put nothing in writing.
Go with her to sign the lease for the new place. Give her the money for the security deposit, cash up front. Subsidize the first month's rent as promised, cash up front, if you need to. That's your minimal tax.
The moving truck will come, you'll say your cordial goodbyes, and voila, she'll be living elsewhere. As she left, she probably told the whole neighborhood what a fine fellow you are. Your problem is solved.
Change the locks on the rental. Change your phone number. Throw the mover's bill away when it comes. If she comes out to your house, call the cops. If she vilifies you in the old neighborhood, you should sadly shake your head. "It's really sad, but she couldn't hear what she didn't want to hear. It doesn't matter that I paid (insert inflated number here) to help her. People in pain get that way..." Get your alternative narrative out there.
What, does the taxman always get nothing but God's honest truth from you at tax-time? Or do you work to avoid paying the highest tax rate if there's any possible way to do so without running afoul of the law?
In closing, I'd like to point out that this sort of promising and alternative truth-telling is obviously the royal road to success in real estate investing. Just look at our President.
And if she gets too mouthy, you can send a guy to talk to her in a parking lot.