Through a Brazen Mirror: The Famous Flower of Servingmen — Delia Sherman

Through a Brazen Mirror is the third book in The Ultra Violet Library, Circlet's imprint of fantasy and science fiction by/for/about lesbian/gay/bi folk. Originally published in 1989 by mass market publisher Ace, the book was marketed as generic sword and sorcery and, in the way of mass market books, disappeared from sight shortly thereafter, before it had a chance to reach an audience who would appreciate its themes.