She is the villain. I hope the husband divorces her and leaves to have a family of his own. Once a cheater, always a cheater. If she cheated once, she would do it again. Now she will have another excuse to cheat since she had a child with her lover and can choose to be with him to give a complete family. Short-term pain is better than long-term trauma. The husband should cut her out completely and sue her for infidelity and deception in marriage. But this is a Japanese drama, nothing will happen and they will reconcile...