"Imogen Scott may be hopelessly heterosexual, but she's got the World's Greatest Ally title locked down. . . . She even has two queer best friends. There's Gretchen, a fellow high school senior, who helps keep Imogen's biases in check. And then there's Lili--newly out and newly thriving with a cool new squad of queer college friends. Imogen's thrilled for Lili. Any ally would be. And now that she's finally visiting Lili on campus, she's bringing her...