"Because your memory was wiped when you rejected me," she said. "For some reason our magic thought you forgetting me was logical, but leaving me with the pain of you saying no was fine. I pretended to be her because..." she sighed. "I thought if you believed I was the sister you remembered, I'd mean something to you, more than I did before." She laughed. "Which is crazy, that locket, the one with your picture in...you gave it to me. The last birthday present you gave me...and only I remember it ever happening."