In this book, Kosman argues that women are ill suited for Talmudic study and serving as witnesses because they lack in analytical capabilities. While this is not true of all women, it is certainly true of Kosman.
The overall thesis of Circle, Arrow, Spiral rests on the idea that women are inclined towards being and men towards doing. Women are receivers and men givers. The sort of assertion that only works if you vastly devalue the entirety of women's labor. Certainly, in the traditional Jewish home, the domain of women is one of doing, of earning money and maintaining the home, and the domain of men is one of being, of prayer and study. Kosman's attributions of these traits are completely arbitrary and she does little to justify her attributions.
But even more aggravating is Kosman's belief that increasing equality between men and women is a sign of the coming messianic age, yet we are not supposed to fight for that increasing equality. Or that some men are feminine and some women are masculine, yet we are supposed to limit men and women to particular roles and spaces.
There are strong arguments for women and men's roles in Judaism but they are not found in this book.