My teenager refuses to set foot in my other wife's home. What should I do?

Do not force him to go; force only hardens his heart and pushes him away from you. In the teenage years, a child needs to feel respected and heard, not ordered about. Start by asking honestly what makes it hard for him, and listen without interrupting or defending yourself. Keep spending time with him in places where he is comfortable, even if not in that home, so that your bond is not broken. Give him time, because acceptance usually comes gradually when he sees you are still there for him. Avoid comparing him with siblings who are willing to go. Fairness of attention among all your children remains your responsibility. See children in polygyny.