[He sees that look, and it makes him check over the thread again. Big, long explanations always give Luke a headache... But it's probably a good thing in this case.]

... I don't really know Hermione or the magic in her world, but it sounds like she really knows what she's talking about. [He smiles down at Xion, though unlike her, his has confidence and hope.] Even if this doesn't totally work, I think she'll find a way to fix that. She's got a lot of other ideas, too.