Looking for manhwa , its webtoon ..lol anyway the mc is female and she have a father but ...

Looking for manhwa , its webtoon ..lol anyway the mc is female and she have a father but there aren't any similar genes to each other then a girl came to the duke and they have the same color hair and others are saying she's the real daughter and also the mc have dark hair color. Then in other scene the fake one show or something to the mc and the mc see the spirit then the fake girl say that the mc is the real daughter