Gwen turned her head at the 'hey' that had grabbed her attention. A girl was looking at her, or at least in her direction, and Gwen looked over her shoulder to make sure the girl wasn't talking to anyone else.
"Hey," she said back, assuming she'd been the one the girl had been talking to. Gwenog was almost certain she didn't know the girl, but then she never had been good with faces that weren't directly related to her goals. "Can I help you with something?"