[ There's a hesitation, somewhat awkward. He doesn't like to talk about it, partly because it makes him uncomfortable to discuss it too much and partly because he doesn't know how much anyone else knows. But she asked, and he's promised himself he'll be more forthcoming, so... ]

Yeah. Or that's part of it, at least. There's no Robin in his world. Or at least he doesn't know me yet. And willingly taking on a nine year old is a little bit different than having a fourteen year old dropped on you. So it's... you know... circumstances.