Can we answer truthfully? I mean, i see no reason why we shouldn't tell her that we are the Prince of Werewolves. As long as she doesn't know said Prince of Werewolves is her best friend our mission statement stays fulfilled and we cut down on the levels of deception we need to run. If we make the Prince of Werewolves look like her ally it would allow us to really cut loose in our true form in the future.