"With the vast, endless ocean of the Warp and the infinite web of the Multiverse a definitive factor; all possibilities are possible, all realities are real." - (I do crossovers a lot)
When Twilight was at her lowest, no one supported her. No one but a voice. And it is this being that leads her down the darkened path of her true destiny.
Ever since she first became a princess, Twilight faced hardships. Her only solstice is in the company of a being she met in another plain of reality. Then one day Equestria is greeted by aliens that believe Twilight to be their god.