It wasn't the truth, but she wasn't sure she could trust him. Every moment she was away from him, she dissected their previous interactions. Draco wasn't the sort of man to do anything without a purpose. What his purpose was with her was still unclear. She suspected that he was simply using her for her ability to get Aberforth released... and maybe because she did that thing with her tongue that he seemed to enjoy. His close relationship with the Resistance was cause for concern. If he trusted her enemies enough to give them lessons on the secret magic he used to keep himself alive, she could be in danger. There seemed no reason to waste any more time.