She's making excuses, accusing you of bad behavior, and giving false threats of attorney action as a defense mechanism.

I seen similar behavior with my Airbnb, I’m guessing a lot of people are experiencing the same thing.

I have found that it is possible to get most inherited tenants on board with my policies-- you just have to offer the incentives that get you the behavior that you want.

As a syndicator myself, I believe conservative underwriting with accommodation for bottom cycle market behavior is important in the evaluation of a deal, as well as the conservative use of debt. 

It is a blueprint. a mapping, a behavioral scan of a motivated seller.

I once stayed at an Airbnb mixed with ltr and found the long-term renters way too casual in their behavior and attire."

If it is a sf, I hate to reward bad behavior, but I may opt for the earlier post option of retaining the tenant, maybe with understanding  they smoke in a designated open or vented area. 

If you start seeing behavior like what you saw in August, quickly address it and be ready to have a vacant unit. 

I have a B.S. in Applied Behavior Analysis (very helpful when working with tenants), M.A. in Organizational Psychology/Consumer Psychology (business form of psychology).

The one side of real estate investing I will never admire is the attitude of many that is "got mine, f you" I don't see how a society, ourselves or our children will benefit from seeing behavior like that.