No, it gets better.
https://www.amazon.com/Real-Knockouts-Physical-Feminism-Self-Defense-ebook/dp/B00EIFPGC0/
So it exists, but it actually undercuts her point, because it's actually a book about the relation of feminism to women's self-defense. If this is the book, the man was perfectly correct.
That's why she didn't specify.