What if relatives and sisters-in-law speak ill of you behind your back?

I believe that the eyes of the masses are discerning, and those who have brains to distinguish right from wrong will understand what kind of person you are. It doesn't need too much explanation, but it's getting darker and darker. If you are surrounded by people like your sister-in-law, it's no use explaining. In his mind, he has decided that you are not the same kind of people, so it is impossible to have a good relationship, and there is no need to waste your effort.