By the end of seventh grade, Faith’s daughter decided she was “asexual,” and then “trans.” She had never even kissed a boy, had not yet gotten her period. But the new identity gave her both a cause and a team. “All her friends are bisexual,” her mother told me, a year after her daughter’s announcement. “There’s only one heterosexual girl in her little crew. Everybody else is lesbian, bisexual. My daughter had to one-up them and be ‘trans.’ ”

