After finishing this, it occurred to me I had George MacDonald's allegorical fairytale Lilith in mind when working on it. George MacDonald was a good friend of Charles Dodgson (Lewis Carroll) . The story is that of a sort of super-succubus who holds half the waters of the world in her hand. Her sin is in cutting off life, which results in her living a sort of half-life and doing harm to others. George MacDonald was quite an interesting character, a Presbyterian minister whose unorthodox sermons (he believed in that God was internal, and in love rather than doctrine) got his parishioners riled up to the point where he was essentially demoted from a parish with a good living to a less remunerative one. It's also interesting that C.S. Lewis was such an admirer of MacDonald, whose vision seems to me much more generous than that of Lewis.This (on Imaginary Bicycle) made me cry, in a good way.
