"I honestly don't know what to tell you. I mean, neither of my parents show any signs of lycanthropy whatsoever, but as far as the experts and I know, nothing that usually causes lycanthropy has happened to me, and there was a pretty long list of potential causes. Except maybe witchcraft, but why anyone would turn a random teenager into a werewolf is beyond me."
In reality, Sven was told sometimes people are born with lycanthropy, but the condition stays dormant until sufficiently strong emotions (i.e. pure, unbridled rage) "awakens" the alternate form. He didn't feel like sharing that with Rochelle, however, at least not in public and not on the second day.
Instead, he tried to change the subject slightly. "Here's a question for you, if you don't mind my asking: You mentioned your dad does business with normal humans. How do you hide your wings in public? It seems like that would be very difficult to explain away."