@Anne9793 Airbnb removes reviews that violate their Content Policy, but nothing in this host's review appears to be against the rules. I'm sure you don't feel the negativity was deserved, but almost nobody who's ever gotten a bad review in the history of bad reviews has ever believed they deserved it
Nothing about your circumstances would merit censoring the host, but you are the author of your response to her review, so you can ask Airbnb to remove it. That might be a good idea, because to be totally candid your response actually makes you sound worse than the review does. It basically boils down to "I spent a lot of money so it shouldn't be too hard for you to flush my family's poop down the toilet."
Had you written a more gracious and humble response, i think you could overcome 1 negative review in light of all the positives. But if your attitude comes across as entitled, that triggers every experienced host to expect a problem guest.
In addition to removing that toxic response, I'd suggest acknowledging the bad review upfront in your future requests, and trying to assure the host that you'll be careful to leave the home in a tidy state with no fecal matter in sight.