"Generally it's polite to start off a conversation with hello," she murmured, teasing a little as she turned her head to regard him. Scooting over on the bench to make room in case he wanted to sit - she did glance around to make sure none of his cronies were around - she straightened up a little.
Part of her wondered if he'd heard about her and James and the misadventure in the potions lab, and part of her wondered how he could have. Still, she supposed word did travel.
"So, hello, Severus," she said quietly, a gleam in her eyes as she gazed over at him.