Women can be referred to the programme by Child, Youth and Family, the Corrections Department, Family Works, Women's Refuge or Work & Income - or they can apply for themselves.
The programme goes through stages - first for women to understand who they are, heal their past and make decisions.
"We help our women to heal through talking about their traumatic events."
It gives them strategies to deal with domestic violence and suicide and introduces them to helping agencies. In the seventh week they get positive and learn about gardening, rongoa (traditional medicine), style and beauty.
"We have one full day of showing our women how to style and use make-up and dress, to make ourselves feel better," Mrs Firmin said.
Finally there's preserving and budgeting skills, meeting inspirational women and setting goals.
"Then they graduate, but the journey isn't over there because we get together as a sisterhood."
The programme is not anti-men, she said.
"Our men are so broken. We're not there to get back at the men - in fact, I would like to restore our families for the sake of our children. "This is what our mothers used to do, as wahine toa, with people like Jo Maniapoto and Sister Makareta (Tawaroa)."
The programme falls under the umbrella of the Kimiora Trust, which Mrs Firmin founded.
The trust also has a national suicide intervention programme, runs Maori antenatal classes and teaches permaculture.