Everyone will find out her identity, when the Elderd Young Miss will tell everyone, because even after removing the necklace, she will not go back to normal. Dark and black magic and used on her, by the villain, so that she suffers a lifetime, and the villain sees her sufferings and is able to lift his curse. And the villain himself falls in love with the FL in the 2nd lifetime, even though he is making her suffer. He stole FL in the 1st and 2nd timelines. The villain is the one, who gave FL the job at the beginning of this story, and she does there in Duke's manor.