Mistress of Death Amongst Immortals

Leilani Alula Potter, the first girl to be born into the Potter line, has vanished, along with Hermione Granger. After accusations of being the next Dark Lady, Leilani, Hermione, and her husband decide to use an experimental Interdimensional Travel Device. Leaving the wizarding world behind. HP/TVD crossover. Starting a little before the pilot. (HP Books/Movies don't exist.)