Why do most mother-in-law refuse to help their daughter-in-law when she is in trouble?

It should be said that we are both responsible. Ring by ring, mother-in-law and daughter-in-law can't do it in place, but they blame each other for not being good enough for themselves. It is unacceptable to be angry with each other.

A good family relationship should be that a daughter-in-law is filial to her mother-in-law and cares more about her elders in life. Conversely, the mother-in-law understands her daughter-in-law and takes the initiative to help the younger generation.