I think it was absolutely clear that SM intended to sell. Before going missing. Otherwise, the court would not have approved the sale to go through.
Sellers sign numerous documents before escrow can open - Listing agreement, Disclosure forms, various compliance forms, and sellers must agree to negotiated price and contingencies with the buyer. I'd bet
@kkdj has much more to list. I'm only going by my past experience and memory as a seller and buyer of our homes.
Then, typical escrow lasts 30 to 45 days. If cash sale, less than two weeks.
SM had to be around to do all those pre-escrow stuff. I really don't think the guardianship judge would give permission for the sale to go through otherwise.