He barely reacts to to her answer, neither sympathetic nor impressed, and she finds herself grateful for it. Now she won't have to pretend it's quite an achievement, or hold his hand over something that's happened to her. They can just talk about the TARDIS. That's safe enough; it's clear that Rush likes her.

"I take her flying, sometimes," she says with a wry smile, tapping the side of her head. "Up here, I mean. I'll take falcon shape and let her ride along in my mind. It's fun."