Jon's smile shifts to something soft but knowing at her words. It does sound like what she would do, despite the clear supernatural power she has to tame these beasts of hell. It makes it all the more impressive that she can do so without using the power too. She is naturally charming. He's seen it with the demons in the hotel, and now he will see it with what passes for a horse in Hell.

He follows where she leads. There's no fear or hesitation in his movements, but a healthy dose of caution. He is no tamer of wild beasts himself, but he was bonded to a direwolf and did touch a dragon in his own world.

It's why he nods in answer to her question. He would like to see her- whatever the her is.