When she came to this department, the first thing that struck her was silence. People working in this Department didn’t talk to each other, they rather used owls or sealed paper airplanes. During the first months, Hermione felt very uncomfortable, used to the looser atmosphere in the previous department. After a few months, she got used to her new surroundings  and fell silent too. There was not much left of the talkative Miss Granger from the past.