What is the way for a wife to return to her home after staying with her family for three months or more, given that her family refuses her return to her husband, and she wishes to return without displeasing her parents?

You continue to send righteous mediators to explain to the wife's family that their action is corrupting the woman against her husband, and this is not the act of Muslims. You seek the reasons that made the wife's family insist on preventing her from returning, and address them wisely. If a solution is unattainable, you resort to the court to restore matters to their proper order.