He let out a shaky breath, "From Sirius Black." When she opened her mouth to demand an explanation, he shook his head at her, and she closed it obediently. "I saw the way he was looking at you at the harbor. I know that look of his. He's a dog and he won't stop until he gets what he wants, and by the way he was sizing you up, it's you he wants next." By then, Draco was visibly shaking with rage. "I won't let you suffer the consequences of my actions – my family's actions." He promised her.