You missed something, Krixy. Coil wasn’t talking about his own kids, they were his neighbours.
Ohhh…
Let’s look at that again (emphasis mine):
He prepared and ate his breakfast, then stepped outside in his bathrobe to pick up the paper and the mail, pausing to wave to the neighbors as they led their two girls out of the house. The flooding hadn’t affected their neighborhood as much as others, but the schools weren’t yet up and running, so the mother and father would be taking their girls to work with them for a short while.
Yeah, I guess I totally misunderstood who “their” was referring to.