At the end of a war, she expected to feel numb. Primarily she expected to be sore and exhausted, but to all the losses around her, she expected to be numb, either due to all her training in shutting down her emotions like a good shinobi, or due to the shock of however many losses she'd inevitably face.
It was probably too much to hope for.
A good shinobi knew how to control their emotions and discard the ones that would do nothing for them, but what kind of a friend, what kind of a student, could discard the memories of their sensei and walk away from their loss without grief and without guilt?
He deserved better than that. She deserved to suffer the guilt of recounting the ways she could have and didn't save him. In the end, they'd both get what they deserved this way.
She stood alone on the hilltop, looking down at the stone of heroes, and she wondered whether someone like Kakashi would have preferred to see his name there or in the field of shinobi who lived out their lives to the end and died peacefully.
If she could perform Edo Tensei, maybe she could ask him that herself, but any interest she could have had in gaining information from the dead as that jutsu might provide had been soured and lost in the war. Good may have come from the jutsu in the end, but to use what resulted in his death would only be an insult, particularly after they worked so hard to free the souls enslaved by Kabuto's thoughtless jutsu.
There wasn't any other way of getting an answer out of a stone, so although she asked him from time to time, while she crouched down and kept him company on lonely, quiet days, it wasn't a thing she'd ever find out.
The silence never did stop her from visiting.
She didn't read him his book, because that would just be embarrassing for both of them, and he probably extracted the sequel from Jiraiya long ago if they ended up in the same place.
She still spent time with him all the same, though. Any day she was in the village, she always visited at least for a little bit.
She couldn't save him, wasn't there when he'd needed her most, and now she never would be. She'd never make it up or make it right again. Those were things beyond her power, after all, and it was thinking like that which led the two Uchiha down the path that ended in his death.
Sometimes she told herself she visited to keep him company, because a person like Kakashi Hatake shouldn't spend eternity lonely or alone.
The truth of the matter was, in the end she visited the stone because seeing the names of her sensei and her friends engraved in the stone front of her was the closest thing she had left to being with them again.