They settled into a routine in their classes, and spending an hour or so a night researching ways to destroy the diary. Harry or Hermione made it a point to check with Ginny a few times a day, to see how Luna was doing. When Ginny told them that she was doing well, and was very grateful that she didn't have to worry about the diary any more, they relaxed a bit. This would prove to be a mistake. They didn't think there was any real urgency, since the diary was locked in the bottom of Harry's trunk. Unfortunately; they weren't the only people with an interest in the diary, and one person wasn't quite as benign in their intentions.