Dusk falls and what’s left of the light leaks from the day. Zan wedges a flashlight between the bridge’s rafters and turns it on, splashing it against the ceiling of the old railroad car. Both kids are asleep where Viv made a bed, but after half an hour Sheba rises and walks over and for the first time since London slips into her mother’s arms there in the rocking chair — where years ago Viv breast-fed her son — that Zan borrowed but she has taken back.