She laughed, "I don't think Professor Snape was very fond of anyone, back then. He certainly wasn't fond of me, despite my high marks." She shrugged. "Yes, that's true." She actually controlled most of her stirring by magic, unless of course it was one of the more advanced potions which required a personal touch.
She nodded when he started answering her question about the blood. She knew a bit from her meeting with Sanguini, but she assumed all vampires were different, just like people - and at the moment she was interested in Dennis.
"Are you able to find a willing donor often?" She was relieved to hear he didn't go out of his way to kill anyone. She understood the need to trick people occasionally, when he couldn't find anyone willing.