Author's note: I REALLY HATE being the one to add chapters like this, but it must be done it seems.
While Katie DID mock you quite a lot you didn't know too much about her, sure you could shrink her and keep her as a "Pet" or perhaps even 'dispose' of her if you really felt that way. Or you could make her grow but...that could be a problem. If you shrank her you'd also need to keep the size changer away from her too. What to do?