Eustace had never seen his cousin Lucy as anything more than an irritating little girl at best and potentially insane at worst. But that was before he followed his own path into Narnia, and realised that everything she had said was true.
He never told anyone, but during his visit to the ruins of Cair Paravel, he came across some portraits of the kings and queens who had once ruled there: his cousins.
He looked with mild interest at the images of Peter, Susan and Edmund. And then he came to the painting of Lucy. With one glimpse of the woman that the girl he knew would become, he knew he'd never tease her again.