The Queen and the Courtesan by Freda Lightfoot (historical fiction)

This book about Henri of Navarre's (Henri III) wife Marie de Medici and one of his mistresses, Henriette d'Entragues is well-written, interesting and exciting.  Some of it is told from Henriette's point of view, and I had a hard time relating to her, especially since it seemed like the author did too.  There wasn't much of her character worth caring about.  I've read about her before, but always as a peripheral character.  Everything I've read suggests that she was horribly ambitious, a selfish conniver and liar.  Perhaps someone should write a sympathetic biography.