In my own research, I've noticed a) a lack of female authors, and b) a lack of female authors with anything to say. The exceptions encountered include Dion Fortune (Who's "Mystical Qabalah" was very interesting) and Madam Blavatsky.
Perhaps it's simply the direction I'm taking. Perhaps its that women authors focus more on Wiccan style stuff, or books of spells. I've seen a few good tarot authors, but not many.
Can anyone recommend good female occult authors?