If you have slop behind it, that's from where most of the water is coming into your backyard - that wall should "capture" it and redirect it on the sides, and eventually, further out along the sides of your house following the natural ground slope (see pictures below).The backyard seems flat - one way or another you'll have to find a way to slope it and move water along.Just my 2¢.

We had to go through 2 calls with 21st Mortgage (Candice Doolan) in order to adequately under the details.

What would be an adequate response? 

With the unpredictable nature of timeshare assessment fees and maintenance fees, I would probably avoid that deal.

The lease had a TBD for the address to send the remainder of the security deposit to My lease agreement states that if the lease is terminated before the natural expiration (such as by an eviction) that a re rent levy would be charged.

Might be time to "Blacklist" that area and let "Nature take it course" as it has done in the past in other areas.This seems like it will devolve the area for investment attractiveness, which will probably drive the property values down to what the local's who live in the properties can afford for themselves to live in, leaving a certain amount of homes and areas as a wasteland of non-kept-up run-down dumpy homes filled with violent residents (further increasing it's spiral downward into a slum).Nothing special about that area. 

By nature of that relative being a veteran and not on active duty anymore, his relative won't be getting "orders" to leave within that year,....therefore....the relative needs to be in the property for at least one year. 

Radon levels fluctuate naturally and high ratings can be caused by severe weather.

Courtney,A lot of these issues you're asking are legal in nature so I think it is worth talking to a real estate attorney licensed in your state.

She has a good job with adequate income & an extra 2K income from a verifiable source.