Hearing the disturbance Severus wonders whether he can ignore it or not. Finally he decides to answer it: The sooner he adressed the problem the sooner it would disappear, leaving him back to his thoughts. Sighing He rises from his chair and walks swiftly through the door and opens it quikly glaring down through his dark curtains of hair at the child in front of him.
"Yes, miss Stone?" He asks coldly, continueing to stare down at her though with a slightly softened glare as she was from his own (formor) house.