What if she's dishonest and fabricates a claim about "our verbal agreement said [fill in the blank]" and uses it to screw you? 

You pick the fabric and you get measured and the shirt is perfect.

People do not want to be presented with proof that could easily be fabricated. 

Metal fabricator to build and install custom handrail.

The usual way that problems like the ones you're describing are fixed is to preserve the plaster where you can and repair the problem areas with 3/8 in. or 1/2 in. sheetrock, plaster washers, wall repair fabric, and joint compound.

A $200 cleaning fee because I didn't clean the baseboards and I left fabric softener sheets in 2 of the vents. 

They fill it above the frost line, but below the grow line (about 1-2 feet to grade), then cover the stone with landscape fabric, and finally fill that last bit with dirt, just enough to grow some grass or flowers.What you need to do on each house all depends on the type of problems and the severity of the problems.

This will prevent most movement.the use of a mesh or fabric tape applied with thinset in all seams ESPECIALLY the inside corners is the next step. 

They ALL fabricate numbers to make things look like they are profitable then say, "investor must review numbers" and just toss enough newbies at them until someone doesn't read the print or someone who reads but ignores it. 

The next people to come here will be the fabricators.