So keep fat margins in all of your estimates. 

For all you know, she'll decide she wants another 18 days and another 18 days ad infinitum.So, just let her know you will not be extending the lease, and will be happy to accommodate her with an eviction on her record, and a nice fat judgment to go with it, if she wants to play nasty.You're going to be out money on this tenant no matter what, I'd bet.  

I need to cut the fat.  

If the sanitary conditions in your unit are such that it attracts pests of any kind, and it becomes necessary for us to undergo remediation in the building, you will be held financially responsible for reasonable costs thereof, paid as additional rent.

@Paul Steward show me where ADA requires someone to undergo significant expense to accommodate?

It would be cheaper for you to pay for a fat life insurance policy for them.I don't know your rental market, but if the normal market there is such that you can't get a unit rented for 6 months to a year, it's time to sell it and at a loss if necessary.

To do so would require that he undergo the same screening requirements she did with background and credit checks. 

Keep in mind that for disabilities based on certain medical conditions (PTSD being a major one) the VA has a nasty habit of requiring the younger veterans to undergo periodic testing to make certain they continue to have this diagnosis; if they decide they have "improved" they will attempt to reduce the disability. 

A) It's not exactly what he said orB) It's BSThe big guys 25+ years are still all quite fat and happy with a ton of debt and units.I'm not doubting Dave at all, since about 80% of people mis-handle debt and a cash-only budget is what they need.However, if you understand the power of using OPM money (ie you borrow o$1 at x% and get a return on it >>x%) it is a major tool in growth.Now if you're 60 and unwinding, I understand. 

Everyone should boycott them anyway, based on fat content.