Well, alright, it looks like they're doing this. He'll humor her, if only because she's a kid. He glances at her when she asks her question with a wryly amused smile touching at the edges of his mouth. Really? That's her first question, not names or anything? He picks up the pen with a resigned arch to his eyebrows, and writes quickly:

It's customary in my kingdom. He shifts his hand when he's finished, out of the way so she can read it, but ready to write again if he has to.