If you need to see what he's paying her, the more tactful way to ask for page 1, the last page signed, and then the page that deals with support (versus the whole 20-30 page doc that may go over how they will deal with sex tapes and how his affair lead to the divorce.. etc).

Two National Eviction Reports Includes: Sex Offender, Terrorist, Most Wanted Criminal 3.

I got sucked into feeling obligated to help them get what they wanted, when my obligation was to the boss.The next time I made a friend in the building, she started wanting me to make other tenants be quieter - as in having loud sex, or singing too loudly. 

You are correct about Baltimore and other areas in that the landlord is responsible for screening the prospective tenant for criminal record, sex offender, etc...

It's important to look at a nationwide report because they might have been convicted of an offense or be on a sex offender list in another county or state and you deserve to know that before renting to them.Another powerful screening tactic is to get an address history report so you can compare their actual residential history with what they claim on their application.  

We use screening company to verify previous addresses, please list accurate information so we can speak to your previous landlord(s).Criminal History - No felonies, or sex offenses, drug trafficking, violent crime, terrorism, burglary, theft, arson, vandalism.

I want to make sure you thoroughly understand this piece since you are going it alone.The Fair Housing Act prohibits discrimination against prospective tenants and current tenants on the basis of the following characteristics or "protected classes": race, color, religion, sex, national origin, disability, and familial status.

Have dinner with her at your place, watch a movie with her at your place and have sex at your place but then send her back to her parents house afterwards.  

The fact is that vast majority of sex offenders will always be a danger which is why you are probably safe to say you will not rent to known sex offenders.

Also I would not be digging into their mail or personal life as it sounds like you are, open or not, it's not very professional and could get you in hot water with the law for snooping or harassing tenants by snooping, all it takes is a cheap drop cam and you could be in hot.