Since none of you liked having Lizzie's sister be Miranda, well it's getting changed.

It turns out that Kate is Lizzie's long-lost sister. Yep, you all pretty much guessed that. But in chapter 3, Lizzie's dad said that her long-lost sister wasn't Kate. But it turns out that Lizzie's mom found out that her dad was telling her about having a long-lost sister, and she got really angry, so she made Lizzie's dad steer Lizzie in the wrong direction.

--By the way, Lizzie and Kate might not look alike, but that's because I mentioned that Lizzie and her twin were NOT identical.