Co-founder of The Nimbin Apothecary, Diana graduated from the Dorothy Hall College of Herbal Medicine in 1984. She has been practicing complementary and alternative medicine since that time, both in private practise and through the Nimbin Apothecary.

She has been a member of the Australian Traditional Medicine Society (ATMS) since 1984 and is a companion member of the National Herbalists Association of Australia. In response to increasing demands for more rigorous qualifications for natural health practitioners Diana completed a Bachelor of Health Science (Natural Medicine) in 2003.