It took her 40 rejections over 20 years to get it published, but it has sold more than a million copies and sales roll on for both Wolves and her many other on-paper and audio works.
Dr Estes, a psychoanalyst and post-trauma specialist, has many accomplishments, with a huge CV and a PhD earned in the western world, plus profound talent as a contadora, a storyteller in the Latina tradition.
Her workshop was called Storytelling in Original Voice: Rowing Songs for the Nightsea Journey. It took just the title to draw me in - here was the promise of learning about true story, deep story, the sort of story that makes history shine, full to the brim with heart, muscle and blood.
We students learnt that whether we were talking myth, legend or fairytale, or unearthing stories from our own lives, they were really all the same in revealing the breadth and depth of human experience.
The word that shone brightest for me in the 28 hours of learning with Dr Estes was numinous. It's different from luminous. No-one says 'numinous' very often in today's world, for today's lifestyle tends to be fast and gritty and shallow and numinous is deep and meaningful.
Luminous merely means bright. Numinous has an extra qualty - a touch of the divine. It was coined back in the 1920s - based on the Latin word numen, meaning 'will, the active power of the divine – by one Rudolf Otto, and Jung used it too. Actually, your will has little to do with it. It's about amazement or mystical awe in the face of the 'completely other'.
You can experience it gazing into the heart of a white moonflower, or walking alone in a forest, or just having a flash of some amazing coincidence in everyday life for which there's no logical explanation. What I learnt is that if I can tell or write stories with a dose of numinosity, I'll be well pleased. For such stories are needed on our big blue Earth now, more than ever.
With our days now so comprehensively ruled by technology, it's more vital than ever to hear or read stories that shine with underlying meaning and that bring home to us the best of what it means to be human.