Rae managed to survive the first book of the Time of Iron series, the universally hated character she inhabits originally didn't, but she greatly altered the lives of several characters including her favorite sociopath, the prophesied Emperor himself. She accidentally betrayed him to his death but it's okay because he still returned from the dead with his undead army and now plans to conquer the world with Rae as his wife. Ah true love, he doesn't trust her or believe anything Rae says but he'll decapitate anyone who insults her. Rae quickly comes to the conclusion that the sarcastic unpredictable sociopath isn't nearly as entertaining he was in the book but she feels guilty about his death and decides that finding him the right wife might help him find happiness. It might also have something to do with a god telling Rae that she's not worthy of being his wife but if she saves him from the second prophecy the god will send her back home. If she fails she'll just die horribly. If only Key knew about the second prophecy or knew what happiness was.
All Hail Chaos - the first prophecy of the Emperor has come to pass, now what?