Many of the chemicals they use to cook meth are very toxic and in the people's republic of MA, you might be required to spend thousands of dollars to clean it up.

So I don't want to be too harsh on her.

Superpaint and/or Duration are good unless you need something to fill in cracks, then you can move into something more commercial-grade, like an elastomeric, block filler or even epoxy if that is the look you want but, careful, the thicker and more commercial the product, the tougher it is to get off if needed in the future and anything not water based, be prepared to toss out or clean with a chemical and not ever use it for a water based product again.  

Not to sound harsh, it actually crossed my mind several times that properties like this one should be worth $0....

@Jacob Ostreicher - I have a real problem with the way many landlords treat section 8, so what follows may seem a little harsh, but I would warn against this kind of strategy for three reasons.1) Section 8 is designed to get good people out of bad neighborhoods.

When I was younger, I felt it was too harsh/ close minded to hear people say "you know if they're the fit within the first 2 minutes."

There are a lot of people in Memphis that will sell Frayser, but would never own anything.I am not trying to be harsh, but simply painting 38127 for what it really is.  

That is a little harsh, but I sense right off the first meeting who I am going to do business with and who I am not.

You can go with the chemical treatment which is cheaper to get rid of them but you have a greater chance of recurrence.  

Divide the building with a wall, front half cabana bar, put a side door in to the back, 5' wide, from the door you'd have a vanity, then toilet then shower, last 3 feet a full length sauna. toilet, Outside on the back wall put a rack and cabinet for pool equipment and chemicals.