Thank you, Lorina, for your extensive help with this issue.
I actually did respond in a similar fashion to your suggestion. I believe she posted a retaliatory review and never mentioned the housekeeper's entry. It was shocking. She alleged that I entered while she was away on numerous occasions, "always waiting till her car was gone" (she did not explain what might have motivated this entry). She claimed that she could tell from the locks on the door. She said I hovered over her and harassed her continually during her stay, violating her privacy (again, not explaining why I would do such a thing). Obviously, Airbnb saw no proof and restored my listing.
I do believe I know what motivated her retaliation. When she first moved in. My partner, who is an architect and works in the office above, said he smelled a very strong smell of Marijuana coming from the apartment. I reached out to her and told her that this had been reported, and I reminded her of the no-smoking policy anywhere on the property. She wrote back furiously, saying it was not her, and said I should have asked rather than accuse her. There was no accusation whatsoever. I just stated what was reported to me and reminded her of the policy. From then on, she was very rude in all her dealings with me.
When she left the apartment, the smell was horrendous. Removing it took a lot of effort. I have tried to explain this to the Airbnb Superhost customer support. Hopefully, they can see that this squarely fits into the retaliatory review due to the host enforcing house rules. She wanted to smoke weed (with her friends) in my pristine apartment, and the house rules cramped her style.
Now I have a blot on my record that I have to remove. Aargh!