The Testaments by Margaret Atwood:
Aunt Vidala said that best friends led to whispering and plotting and keeping secrets, and plotting and secrets led to disobedience to God, and disobedience led to rebellion, and girls who were rebellious because women who were rebellious, and a rebellious woman was even worse than a rebellious man because rebellious men became traitors, but rebellious women became adulteresses.
Then Becka spoke up in her mouse voice and asked, What is an adulteress? We girls were all surprised because Becka so seldom asked any questions. Her father was not a Commander like our fathers. He was only a dentist: the very best dentist, and our families all went to him, which was why Becka was allowed into our school. But it did mean other girls looked down on her and expected her to defer to them.