"Oh, I think all sorts of things can be magic without seeming magic. Like, you could use magic to work an oven or something, but it wouldn't look out of the ordinary. Plus, this has just that little extra sense of being completely superfluous. There isn't a particular reason for it, they're doing it because they can."

she smiled. "Where I live - the TARDIS, it's called - has a rather bad case of bigger-on-the-inside. It looks like a police box on the outside, but there are countless rooms inside."

"I'm Susan, by the way. What's your name?"