Board Thread:General Discussion/@comment-26965399-20160928003947/@comment-96.234.151.66-20161005122744

So, considering that Lich and Eater (as servants of Conchita) mysteriously escaped from the Glass, I have a sneaking suspicion that the soul currently in the Doll is Ney.

She's not a Miku (problem 1) and theoretically she's always in the glass (problem 2) but other than that she fits most of Sickle's description. She is definitely a 'substantial villian' who has deceived many more people (Miriam, Allen, Riliane, Chartette, etc.) than just Gallerian and Adam. If the inhabitants of the glass can leave (at least with Banica's permission), her soul being in the doll isn't impossible. Her current demeanor is also (in my opinion) reminiscent of Ney's apologetic nature when she died, wishing that she could play with her siblings in her next life.