She told him what had really happened in Hogsmeade, after saying goodbye to Lily and seeing Trevor again, who was so frightened and confused that he confessed to her that the Sparrowhawk wasn't a "him" and not even a professor. And then the meeting with the Animagus and her ultimatum for all of them. Draco listened to every single syllable carefully. At the end of the story, as she had feared, he scolded her: