Unfortunately for her, his size had always made blowing him a difficult task for her, and though she'd gained experience since her kidnapping there was still only a limited window of time she could perform before the pains in her jaw prevented her from going longer. Draco was cruel, monstrous, even, but despite the many injustices he'd done to her, he chose to dole this one out far less frequently than others because he knew it caused her more pain, more so emotionally than physically. It was his favorite for humiliation, and of course, he must have deemed it perfect for this moment.