cheapest way to send package to Guatemala

If FedEx tries to deliver a package in Guatemala but no one is there, do they attempt a redelivery the next day like they would do here? Or do they leave a note for the person to go and pick up the package? Just wondering since a friend of mine who is currently adopting was worried last night because she sent a package for her son in Guatemala via FedEx and no one was home to collect it. The tracking said it could not be delivered because no one was there. She was so worried what would happen to the package. Is FedEx as reliable in Guatemala as it is here? I am hoping for her it is?! :) Anyone? Thanks :)