It is heavily implied through the entire DLC and some lore from previous games.
Who would watch Twilight? You get enough nausea and the entire storyline from just the trailers. Althought it would be funny to see the reaction of everyone to an easter egg with the taking hood off glitch where she sparkles xe xe
Thats when I dust off my dagger, rub it with nightshade peddles, get some candles and human flesh and a skeleton, and stab it while saying, "sweet mother, sweet mother, send your child unto me, for the sins of the unworthy must be baptized in blood and fear". Todd Howard better watch out.