[Oh wow this is not the reaction he expected! He gets excited because she's excited, grinning enormously! Right up until she starts asking him for names of trees and animals, anyway. That makes him deflate back down, his smile going a little awkward. He wants to have to information she wants! But]

Ah, no I don't. I won't get us lost, but I've never been good with the names you all have come up with... [He shrugs a little, hoping that doesn't sour her enthusiasm]

We can go now, if you like?