The best I can figure, they're a lot more focused on Mr Snape, and think that he used you to get to Draco.

They asked a lot about you and Milland. They also asked whether you'd tried to seduce me, and whether I knew what you were doing with Draco, and that sort of thing, but I think they'd rather think you were part of Mr Snape's plan than actually doing stuff on your own.