I specifically told her not to bring any witness to a final walk through , put it in writing, and sent her a text reminder.

You likely did some tax write offs since it is a rental.

You create LLC for asset protection and has nothing to do for writing off expenses.

My suspicion is that we probably will see little or no money and should investigate using our losses as tax-write offs (consult your lawyer/tax advisor).

AI can write a listing description for you for free (it won't be good).

Just consider the rent you saved buying the place as part of the profit plus any/all the write offs you’ve had for 3 years. 

In addition, somebody else is paying off your mortgage and the property can be a good tax write-off (consult with a professional).

I want to point out that I’ve noticed his tone in emails can come across as demanding or even a bit rude.For examplez: I see how he writes to the group—always polite and full of "thank you"s—but when addressing me, the tone feels far more demanding.Would it be okay to respond with something like this?"

Your write offs are also not effected, so you can write off miles also as an individual owner.

I would have a CRE attorney help me write something into the lease about abandonment.