Stepmom to Three Villains

After dying in an accident, elite agent Joan Zeller wakes up inside a novel as a doomed stepmother married to a feared warlord in a deathlike coma and burdened with raising three children destined to become villains. Refusing her tragic fate, she uses her skills to fight back, raise the kids right, and rewrite destiny. Years later, the children rise to power and she finally wants peace until the warlord awakens and wants a family with her.