In 2009, Hartmann published a book entitled End of the Fairytale Lesson - How Industry Captures Lohas and Lifestyle Ecos. In it, she shows how industry and marketing reinterpret Lifestyles of Health and Sustainability (LOHAS) for their own purposes. She runs the blog www.ende-der-maerchenstunde.de
and is a member of the executive board of the Professional Association of Freischreiber .
On August 29, 2015, the Süddeutsche published her capitalism-critical theses on the circular economy.