That's right - and he was especially enraptured by her voice. She was so delighting in being in the new Narnia (though she didn't know it yet) that she didn't speak much at first, but when she began speaking, the "music" of her wonder came out. I guess that she didn't change much as she aged, remaining childlike even as a woman.
Edit: I was responding to Peter Lover's post - didn't see those two intermediate.