What should I do if my daughter-in-law returns to her mother's house because of her mother-in-law relationship?

From the perspective of an experienced person, this question is not about filial piety, but whether we live together or separately. After all, we are human beings, and we can't guarantee that there will be no friction between ourselves and our parents, let alone our in-laws, especially our mother-in-law. Women's hearts are thinner than men's. Sometimes, a word, an action or even a look from the other side will bring misunderstanding to the other side, and men may never understand all this. For the harmony of family life, it is better to live separately, so there is a certain distance, and when we are together, we are all happy. If we stay together all the time, contradictions are inevitable. The man caught in the middle can't adjust well and can only become more and more confused. If I come back this time, the same contradiction will happen in the future.