"Not at all Healer Gardner," the girl said, shoulders back as she threw a scalding look at the two Gryfindor boys, "I was heading to the library to do a bit of reading before my rounds and just before I turned the corner that would lead me to the library I heard a commotion. When I withdrew my wand and walked around the corner I saw these two, Potter and Prewett, with their wands out and yanking this poor first year back and forth the width of the hallway. When I tried to petrify Prewett I must have slipped because his hand moved a bit too far to the right and the boy smacked against the wall."