There is a wealth of information here. Brannen has studied the Hekate and classical texts in great depth to give us twelve names or roles for Hekate that mark a journey of healing and wholeness.
I'll be honest, I found it a little scattered. I wasn't always sure whether what she was extemporizing on fit the name of Hekate she had assigned it. I think the rigidity of the structure of the book sometimes got in the way and there may have been more logical ways to organize the ideas.
Brennen also often conflates Hekate with Persephone, Demeter, Kore, Artemis, and other goddesses implying either a soft polytheism where all goddesses are facets of one goddess, or that this isn't really about the goddesses, their stories are just being used to illustrate points along the journey. At various times and in the conclusion Brennen describes Hekate as representing the anima, the female spirit that lives within all of us.
Brannen's audience for this journey is clearly women. Whenever she speaks directly to her reader it is to the way the reader has been affected by the patriarchy or traumatized by an abusive male partner—the binary is strongly assumed here—she has designed this journey through darkness to wholeness for women—but I would have been able to generalize it to my experience more readily if she hadn't been speaking to women so explicitly.
In one paragraph she refers to the "difficulty many women have with their anger" due to societal gender norms about women expressing anger, and then speaks directly to her reader saying, "I want you to stop second-guessing your anger. Listen to it instead. Give it the respect it deserves." (169)
I have no problem with the book not being for me. I'm a cis-gendered white male, I understand my privilege in this area, but I probably would have looked for a different book to introduce me to Hekate. One that was more about Hekate and less about what Hekate can do for me...not me but...you get the idea. I'm not sure that non-binary or trans-femme folks would identify with this journey either.
Some of the practica or exercises were useful and I can take them away with me. I think the main sequence of larger rituals are useful and I could adapt them into an interesting and fruitful shadow work sequence, but this book didn't really help me understand how to develop a practice or relationship with Hekate as a goddess of witchcraft.