Excellent supplement. The writing is tight and top-notch, the design sound and interesting, and the class generic enough to fit pretty much anywhere but unique enough to deserve the title of "prestige class." Warrior Queen is a supplement that pretty much any DM can use to spruce up female NPCs, if not to adapt into a matriarchal culture outright. For the price, it is an excellent purchase.
[4 of 5 Stars!]