@Jordan478
Im so sorry you've had such an unpleasant experience.
sorry to be the bearer of bad tidings, but your chance of removing this review is VERY slim - airbnb just aren't interested.
However all your other reviews are great and frankly your guest sounds a bit unhinged - the review reflects on her, not on you. I doubt that future guests will take any notice at all. Your best bet is to leave a factual, professional, brief response to her criticism that puts everything in perspective. BEar in mind this repsonse is for the benefit of future guests - not really the awful guest you are responding to. by all means come back to this forum and post what you plan to say to get some feedback and advice.
Of course the decreased stars hurt a lot. Especially as they are so unfair. Again not a lot you can do, but you can try to ensure it happens less in the future.
I have a statement in my listing, house rules and pre booking message that extra guests cost extra. When a guest books. I state this again and say if this is a problem , they can cancel penalty free within the next xxx hours.
It's easy to be wise in hindssight, but as soon as I encountered attitued from this guest - being disgruntled over the very reasonable extra guest fee, I would have been inclined to cancel. She obviously had not read the listing, and her hostility, instead of apology, would have rung alarm bells.
Guests like this are entitled and just not worth it. It's a great lesson to them to have their booking cancelled - it teaches them to behave more respectfully in the future, ( maybe) and it saves you from a negative review.
Try to put it behind you, hard as it is, and focus on your next great guest. Something I have discovered, the firmer i am, the stricter I am, the more I encourage guests to cancel if they are not happy with my rules, the friendlier and more respectful my guests become.
Just my opinion.
Good luck