To me it looked like the girl agreed that she was being used as a tool. She looked embarrassed. And the young boy seemed to have no idea what was going on. He likely didn't even know what mom's plans were when she put him in the car. Likelier still, mom didn't even intend to stop there when she first left the house. The kids seemed decent enough that I have to question if that was even their mom. If she is, I wonder if the kids father knows about this?