She heard the sound of steps only a second before she heard the voice, and her fist snapped shut when she realized who it was. Mary Margaret--Snow White--didn't know who she was yet (again), and Regina didn't know how much she'd been told about magic and who they really were. Emma said she didn't know about the curse, so she assumed that meant the former bane of her existence didn't know about magic, not real magic anyway.
"Miss Blanchard," she said pleasantly, putting on her best Mayor smile as she turned around. "I'm fine, thank you." The differences in the other woman's appearance, between how she'd looked before the curse broke and how Regina remembered her, were stark, and plenty of visual evidence that supported the theory that she was still cursed. Everything from Mary Margaret's clothes and hair to the way she carried herself were just different enough to be...well, different.