I Became an Evil Stepmom, Then Got My Happy Ending by Doing Nothing

I traveled into an ancient stepmother novel and became a villain destined to be slapped in the face by the protagonists. In the original novel, I abused my stepson, bullied the heroine, and was eventually abandoned and died tragically. In this life, I choose to show off. My stepson skipped school and I covered for him. When the heroine is in danger, I help her secretly. I thought I could live a stable life, but unexpectedly—— My stepson has become clingy and the heroine insists on marrying me. Even my husband, who was as cold as ice to me, started staying over every night. Until one day, I found the original book in my study. The title page of the book is my husband's handwriting: "Relive your life again, and I will never let you suffer any injustice again."