The vibration of her husband's silver mirror startled them both. No longer laughing and smiling, they were instantly reminded that there was a still a lot of danger outside the door of their bedroom. When she first saw that her husband continued to use the silver mirror despite knowing that it was possible for others to listen in to his conversations, Hermione had been annoyed. Did he truly not see Draco Malfoy as a serious threat? She still didn't understand his motivations for anything, but she knew that it was always dangerous and foolish to ignore those society deemed somehow "inferior'. Kicked dogs eventually rose up to bite their offenders. But, Antonin wasn't stupid. Far from it. He acknowledged her concerns and assured her that they were all being very careful with what they said in the mirrors.