I am trying to get rid of a home that I have and this Real Estate Agent does some sort of FSBO.

Unless you're buying this at such a smoking price you wouldn't want someone else to steal it, I would not close this until it is sorted out.

Maybe you could work out some sort of JV (if there's enough equity in the property) to give you some cash up front and also when the other investor sells it.

You need an agent who will do that sort of work for you, regardless of what they make.

On a yearly basis you want to plan for, allocate resources, should there be a disruption of this sort.

Sort of like autopilot.

With any new lease, make sure there is some sort of clause like Tenant acknowledges unit is in good, clean, working condition, free of mold, mildew, pests, etc.  

There are all sorts of local down payment assistance programs and such as well, so there are options if you know where to look.

@Rashid Algaradi  Non-owner occupied is what a lot of folks generally mail starting out.. you could also include owner occupied that meet your criteria to find sort of 'hidden' non-owner occupied houses; meaning the owner moved but did not update the mailing address with the county assessor, so they still show as owner occupied (and not being mailed to by investors mailing only to NOO). 

Adverse possession is definitely out of the question. she must be violating some sort of city ordinance with the mess all around her house and the negative affect it is having on her neighbors home.