Is the wife sinful for cohabiting with her husband after she learned that he had committed the major sin of fornication with his father's wife before their marriage, given that he has repented and become committed?

What this man did is horrific and among the gravest of abominations, for he committed adultery with someone who is legally his mother. Nevertheless, if he repents with sincere repentance, Allah will accept his repentance and replace his evil deeds with good ones. This matter must be concealed and not divulged, and it is not permissible for the wife to leave her husband because of a sin if he repents and his conduct becomes upright.