Heh; as soon as I'd posted this I thought of three or four werewolf things that I liked or was looking forward to. But the concept in itself feels like it's been stretched way too thin, at least for me. One of the things I loved about your story was that the monster was there and then gone--a terrifying and unexplained intrusion with lasting consequences. A lot of the current werewolf fiction appears to be more concerned with developing an anthropology of werewolves, and I'm sorry to say that I am bored to tears by it.