I’m trying to remember the title of a manhwa I read years ago where the MC gets reincarnated as the daughter of the male lead (ML) and the villainess, who were once deeply in love and married. Things fall apart when the ML falls for a servant girl (the female lead), and they have an affair. The MC’s mother tries to save the marriage, but everyone paints her as the villain getting in the way of “true love,” and she eventually loses her mind and gets banished to a tower with her daughter (the MC). She later dies, and when the MC tries to return to her father, he denies her, even though they share the same eye color. She’s sent to an orphanage where she’s mistreated, especially after they find out she’s not acknowledged by the ML. The orphanage eventually burns down, and the MC escapes by following a butterfly, eventually finding people who treat her like family. Meanwhile, the ML and FL live happily with their daughter(MC's half-sister) as if nothing happened, showing no remorse for the mother’s death or the pain they caused. I dropped the manhwa because I couldn’t stand how everyone sided with the FL and treated the MC’s mom as the villain, even though it was the ML and FL who destroyed the family.