Spoiler about Rania

While MC was doing her volunteer work, she saw someone who wear the late duchess bracelet, her name is Rania. I forgot but it seems she ask the ghost butler abt this and his reaction is strange bcs he ask 'is it someone in her 40s?', it seems like duke's first wife didn't die in an accident but ran away & only leaving a letter (the reason is unknown). Later, when it was MC's birthday, Rania suddenly showed up in front of everyone saying she wants to gives something to MC (suspicious:blobconfused:) and the Duke saw her bracelet, he recognize it as something his first wife had & MC's birthday party is ruined in the end, but MC still try to smile brightly bcs she didn't want anyone to gossip and make rumor abt it. There was a scene where Rania purposefully sat on MC's seat in the dining room (turns out she already been told that it's MC's seat and purposefully do that), she tried to act pitiful and make a scene, but MC saw her scheme and prevented it. That bi*ch does many thing after that, honestly it made me disgusted. Well, there was many things after that, she even tried to get close to Ludville and Ravi, but got no result. There are also an accident where the duke got poisoned & MC will save him, but i won't say much bcs i forgot most of the detail. Fast forward, turns out she isn't the real Rania! She's just assuming/using Rania's appearance/body. When MC almost got the truth abt her, she & her accomplice panicked and kidnap MC. She try to assume MC's appearance and go back to the duchy, but ML noticed she's not MC and threaten her. That fake cried so miserably to duke & MC's brothers, but Ravi noticed something was wrong bcs MC wouldn't act like that. MC managed to escape and appeared, I forgot what did she do, but the fake will turn to Rania's appearance and eventually rot. Later, there's a scene where the duke went to the garden and saw MC, duke got worried & MC asked can she hug him, duke said ofc and she cried, after that she went back to her room & it turns out just now MC lend her body to real Rania to say goodbye to duke.
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The previous Duchess was a commoner. They said that she passed away but she actually ran away. Rania is a child she was supposedly carrying that time. Camilla meets Rania when she doing her "Volunteering Club". Fastforward, Rania invited herself to the Duke's manor and introduced herself to the Duke as his daughter and she called him "Father", but the Duke feels a little uncomfortable with it because they literally just met and she's already calling him dad.
Rania kept trying to sabotage Camilla. She would intentionally steal her seat at the table, she take Camilla's tea time with the Duke and she basically tried to win over everyone on Camilla's side (and failed). However, she is actually a fake Rania. She's someone who possessed Rania's body (real Rania is dead). Anyway, fake Rania's ploy didn't work so she first tried to poison the Duke, but he recovered because Camilla gave him the antidote; next, she kidnapped Camilla and assumed her face, but real Camilla showed up and basically Fake Rania was exposed.
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I was really sad for the real Rania, she possessed Camilla's body briefly to give a hug to the Duke for her last request. As her spirit slowly disappeared, she thanked Camilla and said that it was a shame because she (Rania)would have done a really good job at being a sister to Camilla, Ludville and Ravi if she was given a chance.

https://www.novelupdatesforum.com/threads/a-fortune-telling-princess-%EC%A0%90%EA%B4%98%EB%B3%B4%EB%8A%94-%EA%B3%B5%EB%85%80%EB%8B%98.149117/page-2