[35] fmc is isekai into a novel where she marries the grand Duke and he locks her in her bedroom. Only keeping her around to sire an heir for him.
In this new version she thinks the mmc is cute and they are both shy, she enjoys food and going out into the city. She's easily pleased and doesn't spend a lot of money. Mmc sister (empress) comes to visit and she's a witch? Basically witches eat other witches to gain their power. Mmc thinks that a witch swapped souls with his wife and he likes this one so he wants to keep her. He put a magic anklet on her to bind her to this form. (She doesn't know) and she randomly regains the og fmc memories. She's friendly and cute [told her husband that she has amnesia]
Grand Duke of the North