An interesting theory. My guess is that "taken" is referring to "fortune" not their souls. Now the question is, what would the fortune of a soul be? Corey's fortune would be Heather, Kiki's would likely be Apophyll, Amaria and Titania IDK, and Lin IDK.
EDIT: Shade never said those people died. He said the screens foretold fortunes forsaken, meaning that could be the point at which they lost whatever was the fortune, not merely their death. Hence why Amaria and Titania were shown, but neither died at that point.