Hux finds it strange that this woman doesn't know what a star destroyer is; he assumes her reaction would be different if she were part of the resistance, but even the most mundane people should be aware of the of what it was. Clearly, this woman is from an isolated planet. It's the only thing that makes sense.

"It's a ship for intergalactic travel." He scrutinises her a moment. "In which system is Los Angeles?"