Can anyone help me with any specific contractual paperwork that I can use or point me to a resource that may be able to provide this to ensure that this loan is protected and I get it back in the event that the deal falls through?

I find cold calling is the best way to do this or networking events. 

Go to as many events.

I've been listening to the podcast, attending webinars, reading books, and just signed up for a couple of events in the Chicago area.

Also, in the event of major damage, usually 50% or more, you have to rebuild to Current zoning. 

In the event of termination by Tenant prior to completion of the original term of the Agreement, Tenant shall also be responsible for lost Rent, rental commissions, advertising expenses and painting costs necessary to ready premises for re-rental.

Regardless, outside of an Act of God event, she is responsible as the tenant to what happened to the window and if she says she doesn’t know…it’s on her.

I recommend joining Facebook groups and attending networking events in your area with like minded individuals to build your knowledge and network.  

I'd recommend going to local real estate networking events and meeting other investors in the area.

I literally bugged the owner (politely and nicely) twice a year, for 11 years, as I would see him at the same two community events.