After the Stepmother Wakes Up, I Will No Longer Serve the Triplets.

I woke up and discovered that the world is actually a book. I was the poor, vicious female supporting character in the book, who married the male protagonist when he was at a low point in his life. According to the plot, after the heroine comes back, the hero will divorce me. The children I worked so hard to raise love their biological mothers even more. Good guy, I won't do it anymore. Whoever wants to do it can do it.