I have found in life in general, that the solution to every problem, can be found in the problem itself...hidden, in plain sight. 

The best solution may be for a family member to buy the property and let the other member stay. 

I plan on keeping this property so the last thing I want to do is place a family in here and someone gets sick from mold(unseen) to me.My solution was tear down and build a binishell (system) with green tech(solar panel system, rain water purification system, etc...)

Inspector says that the dropoff around the stairwell is a safety hazard.The solution needs to create a barrier at least 36” high with no more than 4" gaps from the grade anywhere there is a 30” dropoff, which would be 80% or so of the run around this stairwell. 

So then the question becomes do you want the actual repair agreed to done, even if that means it is not the proper solution to the problem? 

Win-Win in my book.Find out why and see if you and the tenant can agree on a solution.

The only solution I could offer her is to do a "Lean To".

This may be the solution I am looking for. any thoughts about that?

Is there any other solution? 

I would recommend finding a local lender that can provide outside-the-box financing solutions.