[He can tell she's not certain. He knows that, for her, this is probably the least hurtful option instead of the one she truly wants. He can recognize some of that in himself, from the time after Aqua disappeared and Terra hadn't yet come, when he was the only member of his family left and he didn't have his world. Living and working at the Colosseum was productive and helpful but it wasn't what he actually wanted. Hopefully they can prove to her that it really is the best decision, and maybe give her something of a normal life. Or at least as much of one as can be gotten when you're in possession of a weapon as strange as theirs.]

Okay - it's a big castle, so we'll definitely have room for you. And Aqua and Terra are great, they'll help settle you in. And, uh, Aqua might have some clothes you can use... Probably better to talk to her about that, though. [Considering he has NO idea what goes into female clothing, and he kind of doesn't want to know. But he produces his Keyblade again, pointing it in front of him and once again making a Light Portal.] Go ahead.