She's bored and tired and generally grumpy. The lack of interesting cases is making her short tempered and irritable. Ron takes to spending most of his time at home with Harry and Hermione knows it's only a matter of time before what's left of his career is over and he's there all the time. Harry looks at her sympathetically sometimes, the only one to sense that their marriage isn't the sunshine and roses that she'd have everyone believe. She can fool everyone about everything, everyone but Harry. There are times, when she catches him looking at her, that she wonders if he knows all her secretes. He can't, or his vaulted honor would have meant he turned her in, but there's a dark side to Harry too, and she's the only one left alive to know about it. There's something poetic about the idea that he might know the edges of her own darkness. The war changed them both in ways they are always careful to hide.