Relationship between mother-in-law and daughter-in-law: What should I tell my mother-in-law?

She can say whatever she likes. Just be yourself and have a clear conscience. If you are hard-working and kind, others will know if you don't tell them. If you tell others that others are wrong, you will think that what the old woman said is true. You are a tricky person. If you don't tell them, you will only say that the old woman and her family are prostitutes. You can't be angry with such a person, and it's casting pearls before swine to explain to her. Be happy to be yourself, and let others say whatever they like, even if the wind strikes their tongues.