The cart rolled up to a corrugated white door in the factory-looking part, stopped, and the man beside her gave the leash a little tug, so she got off. He watched her, but didn’t make eye contact. The other man touched something on his belt and the door clanked up. They led her into a big, mostly dark space, and then between rows of white plastic tanks taller than she was, like the ones for holding rainwater.