I want you

A female protagonist reincarnated into a strange world. But she retains memories of her past life? Her previous name was Jang Hye-rin, and her current name is Lord Marshal Kaild. Is that the name of the female protagonist of a book I happened to read in the school library? 'The female protagonist of this novel ultimately dies. To the emperor she trusted so much.' The female protagonist, who tries to escape at all costs, and the emperor, who loved every woman and married her only after seeing her