I came back thinking it was the ending, but I found out the genre had changed

Even though I was the villainess in the original novel, I managed to dodge every death flag—and by faking my own death, I escaped. I saved a pitiful child who was destined to die, and I sacrificed myself so the protagonists’ lives could go smoothly. Hidden away, I waited for my own happy ending. But just as I was rejoicing at the news of the original leads’ wedding, I received word of my mother’s death and returned to my hometown… Then the original male lead—my childhood friend and fiancé—said to me: “If you were going to fall for something as simple as a death notice, I should’ve done it long ago.” The man I thought had married another woman looked at me with crazed eyes and smiled. What’s wrong with you? You weren’t like this. “Now you can’t go anywhere.”