I personally don't like your bankruptcy option, if the house doesn't sell, you've only jumped out of one hole and into another. If the house doesn't sell, you both lose out but at least whatever is left of your existing credit rating is intact, I don't know how long it takes to rebuild credit after filing for bankruptcy but you'll be feeling the effects for some time and your hands will be tied when applying for loans, credit, purchasing a car or another home in the future, etc.
Take care of you, it's something you haven't focused on for a while, followup with the other agent, find out what is holding up the contract process, get involved, make that action happen, are the buyers waffling on the price, consider sweetening the deal, do what you have to do to move that property, don't worry about updating the wife every 5min. on every development, it's not necessary as you can tell she really doesn't want to be involved or help in the process at all, it's all you at this point, accept this and go with it.
