I'm a Villainess, But I Saved the Heroine

I transmigrated into a novel as the villainess Rubelina, whose hopes of marrying the Crown Prince were dashed by the heroine Yvonne. I believed I could live happily as long as I stayed out of the love story between the heroine and the hero, Zilart. I lived my life without caring about them at all and as a result, the heroine and the hero became engaged without any trouble. Thinking that my role was over, I was liv...