Those children did not know they had been tricked, right until their last breath.
"They—"
Just as Skylar was getting ready to wave over the 11th child, one girl seemed to have discovered something. She pointed at the ten children on the floor and cried out in terror, "Their faces are dark, they're ashen—"
As she spoke, the remaining children glanced at the ten bodies. Indeed, the previous children's faces were dark, and they looked terrified. It was clear that they were dead.
"They're dead!"