Among a multitude of sad stories and poignant asides, Deionarra remains one of the most tragic figures in Black Isle Studios' masterpiece. She appears as a ghost at the beginning -- a former lover of you, The Nameless One -- but it isn't until the end, in the Fortress of Regrets, that you discover her true fate.
One of your splintered states, the Practical Incarnation, lays out the facts bluntly: Deionarra was manipulated into loving you and then sacrificed. The Practical Incarnation knew that her intense love for The Nameless One would compel her to remain as a ghost awaiting The Nameless One's return, unable to pass to the afterlife. It also knew that her tormented soul would act as a link to the Fortress, just as The Practical Incarnation needed.
Deionarra was nothing more than a tool to be used and discarded, and this devastating reveal was the depressing cherry on the gloomy cake of your time in the Fortress. Arguably the best-written RPG of all time, Planescape: Torment is finally getting a deserved successor in Torment: Tides of Numenera, and if it contains moments anywhere near as heart-wrenching as Deionarra's tale, we'll be ecstatic. And in tears, obviously.
I'd love to hear your choices for best RPG moments -- so leave a comment and let me know which ones had the most significance for you.