Hi @Tanya110
Sorry for your experience. It's always best to start a new thread, rather than tagging onto someone else's as more people can see and respond to you.
You should definitely respond to her review. Say what you have said here about the place being immaculate, hardwood floors etc and having gained superhost status because of the quality of your listing, so you were suprised and sad to see her comments. As you take good care to make all your guests have an excellent experience.
Go onto mention the mess the guest left and how disappointed you were that your place was left in such a state.
(I am sure you have done this in your original review of the guest but reiterate it).
Don't respond to emails just reply on Airbnb messaging to confirm that you refute what she says and then don't respond further.
If they put in a claim through Airbnb's resolution centre just be professional, factual and clear. You will have photos to back up your claim that the place was left in a mess so can show Airbnb these.