He'd made her jump, as she was so wrapped up inside her own head she didn't notice him there at first, fiddling with something under a table. When he stood up, she froze, then relaxed a little as she realized it was just the curiosity tent worker. Probably.
"Hi," she said, distracted momentarily by the light in the case. It drew her gaze and she walked over to it, peering through the glass at the objects inside. Many of them were curious indeed, and a few even felt familiar in a way that she couldn't pin down. Her hand rose almost instinctively, hovering just millimetres away from the glass. "Cool stuff."