Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-216.227.96.111-20140115224756/@comment-24747729-20140401142138

I think that they call Kate the she-wolf because the Hunters primarily go after wolves and Kate superficially resembles one enough to be mistaken for a wolf. That, or all shapeshifters get lumped into the wolf category, as that seems to be the most prevalent shapeshifter.