What is the mentality of a mother-in-law when she looks at her daughter-in-law's jokes?

Mother-in-law likes to base her happiness on other people's pain when she reads her daughter-in-law's jokes. According to relevant information, mother-in-law likes to base her happiness on other people's pain by watching her daughter-in-law's jokes. Seeing others make a fool of themselves, she feels comfortable and enjoys it tirelessly. In fact, this kind of person is inferior in heart, so as to make up for the psychological deficiency and satisfy the morbid pleasure.