The sudden appearance of the kitten startles a little laugh out of Charley, and she easily scoops it up when it starts nuzzling into her hip, tucking it into the bow of her arms and giving its stomach a good scritch. She's rather grateful for it, actually, a small, warm, living thing to provide a little bit of comfort when she's so unsettled, and she shoots the Doctor a look that's half appreciative, half a wry, I see what you did there.

'So that's what the kittens are about.' She'll depart the topic of Zagreus for now; she needs a little bit of time to think about it. 'The Rift... gave you superpowers? And other people too? Sounds like something in one of those ridiculous comic books I found in the TARDIS library.'

She had, in fact, come across the comic book section of the library when she was travelling with the Doctor's sixth self, but she doesn't remember that until after she's said it. Charley spares an awkward moment to hope that it doesn't register with the Doctor as odd, but then, she supposes she's probably going to end up telling him anyway, so it's really just a matter of seeing how long she can postpone it.