Well, he's apparently been followed by kittens since he got here and they haven't done him any harm, so it doesn't feel urgent. He'll get back around to it, but his curiosity is directed elsewhere.

A bright, proud grin spreads on his face as she explains. "Brilliant," he answers, still full of excitement that he can actually talk to her face to face now. And yes, Nyssa was a great choice. "Wait, your sister?" he asks, suddenly confused again.