How can family relationships be restored to normal after divorce and the wife's remarriage, knowing that the reasons for the divorce were merely family sensitivities?

Reconciling differences (Iṣlāḥ Dhāt al-Bayn) is among the most sublime acts of obedience and the greatest means of drawing near to Allah, especially within the context of a single family. This is due to Allah Almighty's saying: "There is no good in much of their private conversation, except for whoever enjoins charity or good or reconciliation between people. And whoever does that seeking Allah’s pleasure – We will give him a great reward." (Quran 4:114), and His saying: "So would you, perhaps, if you turned away, cause corruption on earth and sever your ties of kinship?" (Quran 47:22). It is essential to strive for reconciliation with kind words and by relaying positive messages between the disputing parties, while reminding them of Allah. It is important that this be done privately and in a gentle manner. It is not advisable to bring the disputing parties together until their emotions have calmed and feelings of goodwill have been instilled. Attention should also be paid to the characteristics of each person; for someone who is quick to anger, it is preferable for the meeting with them to be friendly and involve a reminder of Allah, without delving into the reasons for the dispute.