@Lawrene0 Did she have no reviews when she booked, or some good ones?
Contrary to what many hosts believe, some guests do take bad reviews to heart and will change their behavior.
Or sometimes the listing and host, and the guest, were just a really bad fit, got off on the wrong foot to start with, and everything went downhill from there.
I read a post where the host accepted a guest with a really bad review, and when he arrived, she straight up said "Whatever you did at that place in Italy to earn such a bad review, just don't do it here." He chuckled, said okay, was a non-problematic guest.