Inigo nods in turn. He isn't too sure whether or not he'd call it his story, but.. he feels responsible all the same. He travelled back in time to stop it, so he has to at the very least accomplish that task.

Or having gone back, having surrendered what felt like his own shot at life, would all have been for nothing.

He doesn't say that though, feels like it's implied in just his nod. No, instead he focuses on the other thing she says.

".. You think..?" He sounds a little unsure. Inigo always thought he would be alone, after all. That he'd finish his task, and then go out into the night like a nobody, losing all the bonds he once had.