It frustrated Hermione to no end that she had trouble falling asleep when she was alone in the bed she usually shared with her husband. When did that happen? Even before she ran off after nearly managing to kill him at their son's birthday for an entire year, she spent countless nights on her own, perfectly content to sleep without the sound of Antonin's steady breathing centimeters away. In fact, there were plenty of times that she knew she slept better because he wasn't even in the same house. Part of her wanted to get back to those days.