My mother-in-law always goes out to travel or dance, telling me to take good care of my children and husband. I don't feel well and don't know how to answer back.

Taking care of your children and your husband must be what you think, so there is no need to quarrel with your mother-in-law for such a thing, but it is normal to feel uncomfortable. It is also their freedom for the elderly to travel or dance. After all, they have no responsibility to help you with your children, so in order to reduce family conflicts, you should adjust your mentality.