Becoming a Family With the Duke and His Dear Son

After her transmigration into the body of a villainess, Ibellia Barnein made it her first goal to call off the contractual marriage that would lead to her untimely death. Try as she might to avoid the cold duke and his son, however, they appear in front of Ibellia time and time again. Can she break her role as the evil stepmother? Or are the novel's events doomed to pass despite her best efforts?