Hermione writhed underneath him, a long, hoarse groan coming from deep inside her. Her whole body was taut and straining as if the strength of the magic inside her was too great for the limits of her body—he sensed it roiling inside her like murderous waves in the fury of a storm. The longer it went on, the more cracks appeared in the window. Draco’s stare went from her to the window, frowning. 