honestly i already have some ideas of how to give sophora at least closure, making her sort of like Colonel Walter E. Kurtz from apocalypse now, just utterly broken and empty from trauma into a complete psychopath, which im willing to bet money was at least somewhat close to what william had planned for her, and now that i think about it probably why fen said she "didnt fit themeatically" or whatever it was that was said. then again you have the eternal reverie plotline which also dips into shit like that so who the fuck knows.