Macsyna King blames her former partner Chris Kahui for the death of their twin three-month-old baby boys, in a book to be released next week.
Breaking Silence: The Kahui Case, co-authored by journalist Ian Wishart, tells her side of the highly publicised deaths of the twins Chris and Cru from deliberately inflicted head injuries in 2006.
Their father, Chris Kahui, was acquitted of their murders in 2008 and no-one has yet been held accountable for the deaths.
The book, out on Tuesday, has sparked public outcry. A Facebook group calling for a boycott quickly attracted around 45,000 members and it has been banned by some retailers.
In the book Ms King details the moment she realised he was responsible for the twins' deaths in 2006, Fairfax Media reported.