do you have a escribano?
you should.
we have done similar transactions, the way it works is your escribano sets up closing at her bank. They have rooms for this. You have your US bank wire the money to her bank, and, during the closing, they bring in the money once the escribano is satisfied all the papers are in order, and the money gets divided up.
Usually its transfered in dollars, rolled into the room in dollars and run thru a counting machine, divided into piles for her, realtors if there are any, past due taxes, fees for transfer, and any other outstanding debts that prevent a clean closing. Especially with older sellers, there are almost always unpaid bills, and they get paid at closing. Sometimes it all takes place in pesos. The rules change all the time, but the money still gets divvied up, in cash.
Then, the final pile gets shoved over to her side of the table.
At that point, you dont have to worry about it anymore. You are done, you own the place.
Sometimes, they pick up the cash and walk out.
When we bought from a couple in their 80s, they had the dollars run the machine, traded for a pile of pesos, those got run thru the machine, then deposited in their account.
Sales happen every day. Escribanos and banks have established systems to make sure the money goes to who it belongs to.
Usually the wire transfer must happen within a certain number of hours of closing, although, who knows what Milei has managed to break...