How he spent the hours he was away from the flat was a topic that Hermione found herself curious about, but she didn't really want to ask. She didn't want to know which Death Eaters he interacted with when he left. Knowing too much about the outside world could either terrify her to the point that she never wanted to step outside again or encourage her to return to Hogsmeade. Draco wasn't in a rush to explain his absences either. It was possible he understood what too much knowledge would do to the woman.