That'll teach him the error of trying to be a voice of responsibility. Though, as he knows from her first universe-hop, tired end-of-the-day Callie is just as prone to moments of intractability. Meanwhile, Ianto already seems to be finding his footing, surprisingly. Tea is always a good idea. It had been a commendable effort. "I'm afraid so, Callie. The cost of entry into a new universe, think of it that way." Is that suitably storybook and ritualistic to appeal to her particular bizarre outlook? "Pretty reasonable, when you look at it like that. And your room's easy enough to get back." Shame about the charming green coat, though. The Doctor well knows the worth of just the right coat. But they can find something even better, between the TARDIS and the whole universe. She can be back to her magicianly finery in no time. Besides, she won't have the leisure to miss her old things. He's learned his lesson.

"Look, we've all left some things behind," he tries, in his best, most reasonable tone. It's a bit of a stretch; in his case, he's only losing crushing boredom and some ill-advised gadgetry. It doesn't remotely compare to what he's getting back in this transaction. Besides which, leaving things behind is sort of what he does, and the worst of it is, well, behind him. It's been a little too long since someone with a real grasp of human (et al) workings has had the opportunity to coach him. That tank is running on fumes. So he's really doing the best he can with what he's got. How to finish this abortive bolstering speech? Advise her to be strong for Ianto's sake? Throw candy and run? "The only thing to do is move on. After tea." The Doctor is absolutely not looking to Ianto for help. Just commiserating. That's just his face.