In truth, Draco was pondering sleep. First off, self absorbed as he was, he was a bit tired. They had been going at it for a while and his day had started pretty early. He really didn't give much thought to Hermione or how she must feel. Secondly, and more important, Draco liked the idea of molesting Hermione out of a sound sleep.
Figuring Hermione was concerned with how he felt, Draco often wore his wishes on his sleeve, she turned over and seemed to get ready to go to sleep. Settling in, he closed his eyes and waited to drift off.