Far from being offended, Draco burst out into loud laughter. Hermione was surprised by the response. He was not a wizard who was quick to allow his emotions, even positive, seemingly innocuous ones, to overtake his countenance. At his father's knee, he learned how to control every single expression he possessed. The Malfoys were gifted in their abilities to remain perfectly neutral on the outside, leaving nothing but mystery on the inside. It was a trait that she had to work extremely hard at to convey while it seemed to come naturally to them.