Short Story: Woman suffering from terminal cancer meets weird guy who has a topiary in his isolated home that is the size of a large oa
"Slow Sculpture" by Theodore Sturgeon.
An embittered scientific genius cures a woman that shows up at his doorstep of breast cancer.
The fictional cancer treatment makes it sf.
..."I had a crazy kind of image. Do you think two sick twisted trees ever made bonsai out of one another?"
"What's your name?" he asked her.