That entire part of the country is unstable because of the clay type and moisture expansion and contraction cycles.

Greetings Gentle Readers!

The downside is that they can often have excess moisture & are usually seen as gross when you are looking at homes built 40+ years ago.

The subsequent mold WOULD then be your responsibility to resolve because you did not alert the landlord of the condition of moisture, which, when left unresolved, leads to other bigger things like mold. 

In other words, the cost of preparing the area, breaking tiles, cutting open the slab, excavation to the pipe, backfilling with clean fill, termite pesticide application, moisture barrier, rebar epoxy to old slab, pour new slab, new tiles are all covered, the $150 to fix the actual leaking pipe was not covered.I had a collapsed fitting under the house confirmed by camera. 

Since her mom was involved to such an extent, something tells me that tenant B is used to getting her way, and gets pretty bent out of shape when things don't go exactly as she wants.Also, there appears to be more (albeit, anecdotal) evidence that these weed-heads were reasonable in the face of gentle confrontation and didn't threaten you and your entire extended family with violence and revenge.  

I'd also make sure that my gentle, pleasant water sprinkler was running over the new lawn when ever you show the place.   

I spent all this time installing these and the one tenant still complained about moisture...Turns out they were not turning the fan on at all after I installed them 

Do you have a moisture issue?

Do you know where the moisture is coming from?