Sometimes being a friend is its own worth. Considering how few people can stand to be around him, she isn't likely to lose that status as a friend for a long time, if ever. If he ever got wind of her doubts, he'd just have to double his efforts at proving she's worthy of it all-- as it is, he's just happy for her. And wondering. And tentatively reaching a hand out to try and touch her hair, oops.

"Is it real? A real change in your shape, like when you're an owl or a fox? Or is it just an illusion?"