The kids wrote about their favorite meals, their school obligations, and helping their parents at the store. The families told them they loved them, and managed to parent from afar: “Cover yourself with a blanket—the air is cold.” The messages delivered between a soccer team trapped inside a flooded cave in Thailand and their relatives gave intimate insight into an 18-day ordeal that captured the world’s attention—and ended Tuesday when the last of a group of 12 boys and their coach were saved.