The Doctor paused just outside the doors to the TARDIS with one hand on the handle. "Things you should know? No. Not really. Except ... none of them have ever met another Time Lord. Well, actually, Martha has. The Master. And I suppose Donna has. Sort of. In a way. No one you know. It's complicated."
He considered, momentarily, telling Romana more, telling her what he'd told his companions of Gallifrey, what he'd seen with them, but decided against it. Details had a way of coming out on their own. No need for him to help things along, not when, eventually, talking to his companions would lead Romana to asking awkward questions.
[ooc: No need to worry! Hope things are all right. ♥]