In this series so far, whenever I have written Cordelia’s name, it has almost always been immediately followed with “, as Buffy’s Shadow Self,”. She has existed up until now as purely a reflection of Buffy. That is her narrative function, the purpose she was designed for. She continues to fulfil this role through to season three, when a certain slayer takes hold of the reins. But this is the point in which she stops being just Buffy’s Shadow Self, and becomes a full character, part of the show in her own right.