What is the ruling of Islamic law and reason regarding dealing with a wife who committed adultery and repented, then her family denied her deed and threatened the husband?

The husband and wife should have covered up their issues after repenting. The husband should apologize to the wife's father for his previous words against her, and bring his wife back to his home and live with her kindly. What the wife's mother did, cursing, reviling, and preventing her daughter from returning to her husband's home, is not permissible. It is not permissible for the wife to obey her mother in this; rather, she must return to her husband's home.