Oh, one more thing, instead of asking her to confirm receipt of the letter, which she may stubbornly refuse to do, just say she should contact you to work out a mutually acceptable appointment for when you go back in to inspect. 

Sad.I would suggest texting him/her your intentions for record and finding out the laws in your state and if you have the time and stubborn personality like I do, fight it.      

Just stubbornness about trying to get me to rent to them again, and all over the phone.

.) : apartment number, name of tenant, money collected (check number and purpose of payment), any money owed, amount of their security deposit, date of move-in, date of move-out for any upcoming moves, and any notes (had to call the cops again, I think we need to discuss giving notice to move - that kind of thing).Once a year I'd do the above, but include what market rate would be for each apartment, and show the total income he was taking in vs. how much he "could" be taking in (he was weirdly stubborn about not wanting to raise rents much, to the point of being ridiculous). 

It is amazing how often a bad attitude from someone can get my stubborn to fully engage, but in this case, as a detatched spectator, I would hire someone to clean it. 

When the latest parties discovered the error, they stubbornly refused to work out a deal among themselves. 

I bet they like cash :-)They could be stupid and get greedy and stubborn.  

Yes that might be the case, but it could also be a stubborn seller, a buyer that backed out, an unorganized broker, etc. etc. 

But then there's some other markets which are still ridiculously stubborn, or maybe I am the ridiculous one.

There were a couple of companies that approached her a few years ago but she was being stubborn and missed those deals.