Assuming the rehabber agreed to the lease/option, they and the buyer have no assurance that when the buyer applies for a loan on that property, they'll be able to get one.

The work or improvements they were effusively assuring Me would be done were all, somehow or; other forgotten.I rent houses to people who go out and make the money to give me.

Similar to when a football coach tells his players to "remember this feeling" after a big loss so they can assure it won't happen again, remember the feeling of having to pay rent and be sure that in your (hopefully near) future you can transition to the other side of things as a landlord and escape the tenant life.I think for now you need a serious look at your situation. 

I would take the risk anyway if I knew I would always have the funds available to pay off the loan if they called it, but because I don't have that assurance, we did not transfer to LLC and went the higher liability insurance and umbrella route with our property.  

It wasn't going to be assured, but hey, I'd have some cash-flow in case things remained flat. 

Does she have equity in the property now and will there be enough equity after all payoffs and closing costs that will assure you get your money back for the rehab plus x amount of $'s that you settled on before hand in order for you and your partner to make a good profit on this deal?

Working with the tenant gives an investor additional assurance that there will be an end.  

I would recommend 2  1) Mark Vernon at On Q financial and 2) Dave Starling at Assurance Financial 

one of the tenants just got married. of course before he signed the lease he assured she would come here and he would go there.and of course, it's just been the wife coming to stay longer and more frequently.....No specific addendum we wrote to cap this is in our lease.Tenant is requesting a month now for wife to stay during holidays and it's a nuisance to already complaining roommates.Feedback appreciated.

If we put a house under contract, they can rest assured we will close on it, for the price we say, in the time frame we agree upon.