LuciferJr
(Note: title is NOT a Black Butler reference, this will NOT be a Black Butler fanfiction.)
A single decision can change so much in just a second. Elizabeth Hunter knows that better than anyone, especially seeing as she made a decision that changed the world. She went along with her friends idea, and did a ritual that he found in a book, which ended up being a very bad idea. She accidentally broke the barrier between dimensions, and summoned monsters that are trying to kill her due to her being the only one who can close the portal. Fortunately, a different kind of monster came through.