I wonder if you phrase it as a mutual question - "Tiff, you are my daughter and I love you, and it would be great for you to be here where you know people and can get a job easily.

"You know, my health has not been really good - and I am not feeling up to doing much at all these days. How can we work out enough quiet time for me without you feeling hurt?

"When I am healthy again, there will be no problem. But for now, I really have to take it easy.'

Let her give part of the answer, or the whole answer.

Just a thought.

Or - Get an unlisted number and don't tell her?