OKAY SO NEW INFORMATION:
There's probably a way to get a straight answer here on a lot of the information. Apparently you can cast speak with dead on the corpses of the major bosses. Can someone cast "Speak with Dead" on Ketheric and see if the plot holes regarding Isobel, Aylin, Ketheric, and Balthazar are filled in? Specifically regarding Isobel (and maybe Aylin's) selective memory, and the timeline of the Soul Cage?
