Sale of home - owners deceased

[Tim Sharkey]

Need advice from a transaction pro:

Here’s the scenario:

I sign a listing contract with a surviving owner in a two owner (non-married) life partner domestic arrangement. One owner has deceaased.  

I find a buyer and represent that buyer in a dual agency situation (allowed in PA) and house goes under contract. Earnest money in escrow.

Now the Surviving owner dies during the transaction.

What’s do I do next? Do i need listing contracts with both estates or only the owner who lived longer?

Now what do I do? Does my buyer still have a deal.