Cinderella Got Married, So The Evil Stepsister Can Chill Out...right?

After getting hit by a car, I was reincarnated into the world of "Cinderella"! I used to be a driven, hard-working person. And now, in this life, I live as Cinderella's stepsister Petra. Cinderella is a beauty, but also very lazy and sloppy. In the hopes of bringing her and the prince together in marriage just like the fairytale goes, my other sister and I did our best to educate Cinderella. People witnessing mistook our strict ways, and the rumors of "the evil stepsisters" spread around... However, despite the obstacles, we successfully saw Cinderella married off to the prince! Happily ever after!... Or so I thought until I met a mysterious gentleman named Eric. He approached me at the ball just so he could rudely accuse me of bullying Cinderella out of jealousy! Well, he chose the wrong person to pick at because this "evil stepsister" isn't going down without a fight!