I would also suggest putting up a 24-hour notice to inspect the property and verify her continued presence.

So do a background/credit check, get a full application, paystubs (Call to verify), former landlords phone #s (Call to verify), and other information.

Keep in mind this is sponsor-provided material, not something that the site discovered through research, nor verified. 

Given your extensive reviews and strong opinions about so many land investing courses, would you be willing to verify your identity as an independent investor?

Do you verify their income?

That is (and you can verify this with your amortization schedule from the bank when your loan originated), the interest and principal portions of the payment as applied are inversely proportional.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Although you don't need licensing for many loans, it's probably a good idea to deal with and verify the licensing of NMLS licensed lenders.

Quote from @Lolo Druff: Just like turn signals, you should always trust, but verify that the seller is telling the truth.Your offer to purchase should include a requirement that the Seller provide all documentation and agree to sign an estoppel certificate (also called an estoppel form or agreement).

I want to enter and secure property now  since she verified vacating apartment, but want to hold her liable for this month's rent.