How to Get My Husband on My Side
[105] Following (loosely) the Borgia daughter Lucrezia (Ruby) is married to a noble night of the North. Her Brother Cesare doesn't want her to consummate her marriage (she does) and Cesare has been abusive towards her for a long time. He sees it as a twisted type of love for her, even telling her that he wants her to run away with him and become his wife [she tells him she's in love with her husband and to leave without her, hes crazy](and incestuous) he loses it on her and is caught after hurting her and fights Izek, [her husband] and disappears. She can communicate with monsters that are animal types (not demons iirc) and she has a lot of trauma from being abused and having an eating disorder. She has some massive mood swings and immediately prostrates herself when she thinks Iz will want to hit her (in the beginning) Iz is actually in love with her, and has been treating her better and trying to learn more about her. Freya is the original fmc and is becoming more like a villainess with her actions towards Ruby.
Failed To Abandon The Villain
[43] fmc was isekaid into novel where the villain kills her. She decides to try and kick him out of their house (he's a slave/pet) but fails. Her entire family and attendants are murdered by him but he keeps her alive. He's the head magician of the Tower and takes her captive for a bit. Has an unhealthy obsession with her and threatens to kill anyone in his way or that he dislikes. She ends up escaping with a young boy (later will be the mmc protagonist of the novel) and goes to a Duke's home to learn alchemy and be protected from the imperial family. I'm on the fence about the Duke tbh. She just met her fiance again (crown prince) and the emperor basically told her she will still marry his son.
Seduce the Villain's Father
[91] she gets isekai into a novel (in the parents generation as a side character) she saves her pregnant sister from being kidnapped and accidentally takes her place. The emperor of the neighboring kingdom (mmc) keeps her mostly at a distance, but she has sensitivity to mana and magic. As he is a descendant of a god, he has a lit of divine magic and is very healing /rejuvenating for her. So they have to meet occasionally. She decides she's going to save his life and prevent him from marrying the black magic woman, whom has the villain child with him in the novel only for the son to kill him. Mmc realizes that his could be fiancee is using black magic and has a full on fight with her, and fmc summons the god in wolf form to help fight against the black magic and demon of the underworld. The bad guys escape and fmc goes back home, mmc starts to purify his land (for her) and they plan to reunite and marry eventually. After 2 years of exchanging letters, they now aren't getting each other's correspondence (because of her dad, the king) mmc decides to confront her face to face and when they meet up they sleep together. She's going to try and convince her family that they should marry, but no one is really listening to her.
Like A Wind On A Dry Branch