After the Happy Ending, the Mary Sue Awakens

What happens when a Mary Sue heroine realizes her entire life was scripted? He Man discovers the truth only after marrying her devoted male leads—proud sons of heaven who willingly shared her heart. But when a mysterious voice announces "Happy ending!" after the birth of her last child, everything changes. No longer the naive, lovestruck girl they once knew, she awakens to a reality beyond the novel's pages. Now free from her predetermined fate, can she forge a new path, or will the story demand she stay in character forever?