Strikes her colors..
Surrender?
What did they do with the surviving British?
Honestly I have no idea but I'll take a guess at it: Threw them all in the brig or otherwise confined them, and put them ashore at the first opportunity? (Either right there on the coast, or navigated to Buenos Aires or whatever the closest port was and put them out there?)
Bainbridge took the survivors (close to 400 men)on board the Constitution. I have not be able to find out what he did them after that. My guess is that he probably took them to a Brazilian port and off loaded them.