It generates a demand letter, which usually has to be cured - by paying off the debt or otherwise - in 30 days.

The PM needs to post/serve a Notice to Quit for Reasons other than Non-Payment of Rent for the gas not being transferred into the tenants' names; the tenants will have to cure it within your state's allocated time or eviction proceedings will begin. 

The cure for this is to focus in on one traget area and a specific type of project.

if the ADU were to be removed and it cost $1500 to burn it down and remove the debris, it's an acceptable cost to cure and an underwriter would just move on.  

If she's unwilling to exit the lease, consult with your eviction attorney and proceed with an evictionDepending on the state (not sure about TN), you don't have to continue accepting late payments even though the tenant cures a demand for nonpayment of rent.

Tim, have you noticed that US drug manufacturers rarely market curing drugs?

It cured me of the desire to work with turnkey providers.

However, they see use as a VRBO as Satan incarnate itself which can only be cured with high taxes since profit is evil.

You may want to send a notice of lease default due to the unpermitted use and give tenant 30 days opportunity to cure.

And, often times, that's the bigger problem to resolve before curing the wood fungi problem.