Look, it's very basic in lots of ways. The premise is that treating your stress with food or alcohol doesn't help and may exacerbate your problems. Not new.
But I'm rating it five stars because it was so nice to feel "seen." She provides stories of women who are, as she puts it, sub-clinical for any of the three disorders that make up the "toxic triangle" - not alcoholics, but their doctors would probably tell them to drink less, not binge eaters, but definitely turn to food when stressed, not depressed, but struggling sometimes - and Holy. Fuck. Did I feel called out. Recognizing that behavior that may not be clinically defined may still be distressing and exacerbating other issues is pretty useful.
Her advice was similar to advice you cant find in many CBT or mindfulness books.
And she defines all of these behaviors as "self-focused" coping. That instead of making others uncomfortable by asking them to change their behaviors - even if that's the best way to handle a problem - these people attempt to change themselves, even where they aren't the root of the problem. And even in coping, they turn inward to handle the emotions that are causing them distress, even if the proper purpose of that feeling should be outward (i.e. anger at being treated unfairly, but having to "be nice" results in women not speaking up about it, and not talking to another person about it, instead going home and eating to get food-coma-endorphins instead so that NOBODY ELSE IN THE WHOLE WORLD is "annoyed" by these feelings, just the woman at the center).
So her identification of a problem was very helpful for me. Her solutions were now very common mindfulness tools, which doesn't make them less beneficial. Still, five stars since it's easier to be mindful when you have language for it!