Left a sitter a bad review -- now they're getting aggressive?

We had an uncomfortable experience with our last Rover sitter, so I left a brief review with some notes on our problems. I made sure to be as kind as possible since I thought they were nice people and meant well, so I tried to emphasize that in our review (by using those exact words).

The sitter immediately got very argumentative and started messaging me, even after I asked her to stop. She then wrote a lengthy response to my review (posted on her profile), in which she called me "theatrical" and directly contradicted what we had talked about in person.

We've generally had great experiences with Rover, but this experience has left a really bad taste. Is there anything that can be done in this situation? Has anyone here gone through a similar situation?