My grandparents were first generation Americans who were just starting their lives as young adults when the Depression hit - my grandfather spoke broken English and better Italian than English, and had a 5th grade education.

She is an older woman that says she is going through a divorce and wants to move to my town so she can be close to her adult daughter. 

Somewhere around 25, as freshly graduated bachelor's or master's degree graduates with well-paying jobs after interning and finishing their first years on the job, they truly enter the dating scene as adults with good jobs and strong prospects.

Stop being a responsible adult early enough that you can come hang out at the next meet-up!

Contact the police or an adult protective services agency in her area to do a welfare check on her. 

Maybe have a discussion that you are afraid she can't afford the rent, and you are considering giving her notice because of this (this nips off the "I'm a bit short" excuses)  along what would be necessary for you to be comfortable allowing her to remain as a tenant (catch up on the behind rent, maybe over 3 months period  AND all occupants PASS background check) . 2-3 working adults SHOULD be able to come up with the rent -- I don't imagine that you are gouging anyone.It is possible that if there is a wide open door in front (no 30 notice required if you move in the next 45 days!)

One of our neighbors has a house that is supposed to sleep no more than four adults,  but twice this summer there were 18 to 20 kids in the house and it was booked through Airbnb.

I don't think section 8 pays for adult children ???

The USGS also has some live stream web cams, like this one in Florence SC, that can be helpful when trying to gauge conditions at times like this when the Carolinas are experiencing widespread flooding. 

@Dave Foster As usual, good news or bad news, Dave has the answer.I'm on my boat right now enjoying my first adult beverage of the evening.