To add a little bit to my comment about The Mists of Avalon, it's almost trite to note that many women come to Wicca after having read that book. And it's certainly not a how-to book or even, necessarily, good mythology or good history. What it IS good for, I think, is for the process that Monique Wittig called for when she wrote:
There was a time when you were not a slave, remember that you walked alone, full of laughter, you bathed bare-bellied. You may have lost all recollection of it, remember...
You say there are not words to describe it, you say it does not exist. but remember, make an effort to remember, or, failing that, invent.
One thing that is so sorely lacking from women's lives that we scarcely notice its absence, just as blind people scarcely miss the color cerise, is a vision of what it could be like to live in a society that recognized the divine feminine. Mists presents a complex world where, although it's fading, the feminine divine is real and recognized and articulated.
I'm a woman, a Witch, a mother, a grandmother, an eco-feminist, a gardener, a reader, a writer, and a priestess of the Great Mother Earth. Hecate appears in the
Homeric Ode to Demeter, which tells of Hades who caught Persophone
"up reluctant on his golden car and bare her away lamenting. . . . But no one, either of the deathless gods or of mortal men, heard her voice, nor yet the olive-trees bearing rich fruit: only tenderhearted Hecate, bright-coiffed, the daughter of Persaeus, heard the girl from her cave . . . ."