Harry's spell knocked Sue clean off her feet and the knife fell to the floor with a clatter. He rushed forward and lifted her up, carrying her back to the bed. He cast healing spells so fast and so powerfully that they caused a breeze in the room. It made Hermione's hair stand on end. Enola joined him and soon their wands were almost like duelling chopsticks, doing all they could to repair the damage. After a few minutes, they stopped and drew breath.