How do I report a sitter?

I have used Rover before and have had a great experience. This time, we decided to visit the home of a sitter a week prior to our trip, just to make sure everything was ok. The sitter's profile states she has one dog, however, she has three. One of her dogs is an extremely aggressive pit bull (by her description) who attacked a dog in the past and ran away from home over a year ago. They recently got the dog back and she told me it was locked up most of the time. Before we went to her house I asked her if her one dog (the only one listed on her profile) was a male or female, since my female aussie is an alpha female. She said he was a boy. No mention of the aggressive female pit, or the other pit. Her dogs were in the backyard. There was a fire pit and trash every where and they were drinking out of a bird bath filled with stagnant water. The neighbors also had 2 or 3 pits and her dogs were running back and forth along the fence growling and barking aggressively. She has great reviews on her page, so maybe this was a one-off, but it sure didn't seem like it. I'd like to leave a review on her page but it doesn't seem like I can since I didn't book her. People need to know what kind of situation they are putting their pets in.