That's nonsense. Ridiculous. Yuuki doesn't possess the ability to change herself yet, such a tiny little fledgling, who needs to be shielded from the world. His small child, precious, sweet and kind, with an innocence he never wants to see tarnished.
He isn't sure what comes next. Confusion, or perhaps a surge of anger, maybe even worry and hope. They mix together and he isn't sure how to handle this, who to blame, who he wants to see. What should he feel? What should he do? What should he say?
He takes a moment to gather himself.]
I'm sorry.
[His words are quiet, soft as if to cushion what he'll say next.]
I don't know.
[He can see her, and her eyes don't give him any reason to think she's being deceptive, but it's not so easy to think about his daughter grown, brought to him by a process he's never thought possible before. Everything about this is suspicious, but Haruka won't be hurtful, just because of this situation. If he distracts himself with this 'Yuuki', his child could be in danger and he'd never know it. Who is to say he has no enemies here? Who's to say he isn't somehow here, too?]
You'll forgive me if I ask for proof.
[Yuuki probably didn't understand, only knowing her parents worried for her, but she'd know he'd take every precaution. And if she's real, she'd know even more than that little girl he'd do anything for.]