I don't blame you for getting aggravated....I wouldn't want to be getting a lot of calls like that either.  

Now you are contemplating timing yourself to this guy for 30 to 60 days until closing, just think about how much aggravation you will have during that time.

This is how I see my choices:1) List it with a trusted broker, pay more costs, skip the aggravation, walk away.2) Sell private treaty, maybe even with a wholesaler, take it to the REIA, post on Bigger Pockets etc.

If you have no experience building then i would hire an experience builder/general contractor to do the job for you, this will save you a lot of aggravation and frustration however it will cost you more.A few things to consider- How do you intend to pay for the development?  

A guy i work with, rented to a guy he knew had no job and then was aggravated every day that the guy didn't pay rent. 

A couple of recent interactions on top of the stack that have taken place over the last several months has finally aggravated me to the point where I am willing to draw a line in sand and point to these gross abuses.

Give her to her via email or letter - so you have proof of notice given.You're about to not only make more money but you're going to be saving yourself time and aggravation the second she becomes someone else's problem.  

Unless you "provide" them by getting them at Rent-A-Center and marking up the cost so then they're on the hook when they break and you make money for the aggravation

When that time passes I will look at leads generated, my time, aggravation, dollars spent, and deals closed.

At best, your lender would come out financially whole -- and particularly P.O.’ed from the aggravation.