Bill wasn't terribly surprised that a young woman approached him. He was often approached, for reasons that even those who approached him couldn't quire articulate. They needed to ask him something, wanted to know his name, et cetera. It was part of who he was - who all vampires were. Magnets for unwitting prey.
He had been watching her for a few minutes, anyway. She had passed him twice already, looking more bewildered as she went on. Poor thing was probably lost, and without an escort, besides. Why were women taking such risks these days? It was another development of the modern age he couldn't quite wrap his head around.
"I'm always happy to help a young lady in need," Bill replied warmly, getting to his feet. She was quite lovely, and though he was well fed, he couldn't help resting his gaze on her neck, even for just a fraction of a second.
"How may I assist you, Miss - ?" he added, folding his hands in front of him. She picked a good night to approach him, full as he was. Any other night would've seen her with two matching holes.