He went silent at her question. How was he to answer it? Should he admit that he knew of a Fred who just so happened to be a werewolf? Hadn't he made it clear just by his quick and rash questions that he did? How much should he really reveal to her?
And what was the likelihood that it was his Fred? Fred was a commonplace name in England. There was bound to be other werewolves with the name. It wasn't like his name, where he only knew of one wolf with his name, and that was himself.