Idleness was the only reason why she even had the opportunity to try to decipher another's motivations or emotions. In her old life, when she was kept busy with her family and with her role as a respected Death Eater, she rarely had time to stop and think too long about anything. She could see how someone could go mad after too long wrapped up in their own thoughts. Or how a person could become paranoid and unrealistically convinced that the world and everyone in it was out to get them.