"Do you still want that?" When she nodded again, he smiled. "Arms up, wrists against the wall." As soon as her hands were up, he conjured shackles to pin her wrists in place. He caressed her head briefly then, kneeling down before pressing his wand into her hand. "Sparks if you desperately need a break, and if at any time you feel unsafe, you  will  zap me." When she nodded her understanding, he straightened up and tapped her jaw. "Open your mouth, Miss Granger."