Why not rent it out for one year, then when the lease expires, get the property in mint condition and sell it to a retail buyer? 

Just to give perspective, they have worked very hard their whole life, is still working just as hard, and never really had anything to show for it, lived very modestly and never acquired any kind of wealth nor a real retirement account.

condition, location, is what drives rent rates,, you won't know what can be charged unless you compare to others in same area,, might look like a peach outside but is a lemon inside. 

Those seem threatening, and no one will go to the post office to retrieve it.

, I just had stubbornness to not let such a disaster ruin my life.

She told me she wanted a quick and easy sale so she can move on with her life (personal problems).

Just offer them what you think it's worth in its as is condition.

You can find all of the lists you want online and the forums:  cash-flow, appreciation, quality of life, job growth, etc.  

My credit is excellent and my payment history is 100% never missed a payment in my life.

In my life I've only purchased two properties both of which were my primary residents.