[... Well. It's not like she doesn't get why he'd ask such a question.

Why, huh...?]

Well, I... suppose I thought that nothing sounded sadder than being forgotten. Maybe that horse never really existed, or maybe he wouldn't have cared...

But that's just how I feel. [So... this. She can at least leave flowers.

She can at least let whoever's grave it was, horse or not, know that they did not leave the world without leaving any mark on it at all.]