I found this book hard going. I finished it unconvinced of the premise, that Sarah was a priestess of a matriarchal religion.
The author tried to build her argument on strands of similarity between Biblical source and relics of Mesopotamia. There simply isn’t enough evidence to make a convincing argument either way.
That being said, I found her argument fascinating. Her theory elevates Sarah from a wife to a near-goddess, a feminist icon. It definitely put her status above that of Abraham. This status requires erasure by the patriarchal redactors if the Genesis is to record a patriarchal account of the events. In spite of their efforts to eliminate Sarah’s unique states, Teubal finds enough evidence to formulate a feminist theory that is intriguing.