Because of her mother's experience, Lorraine Downes became a NZ Breast Cancer Foundation ambassador.
At this morning's Pink Ribbon breakfast, a 10,000-signature petition from Evangelia Henderson, chief executive of the foundation, was presented to Labour MP Jacinda Ardern.
The petition calls on the Government to extend the free national breast screening programme for women, to women aged 70 to 74.
Free screening is offered to women aged between 45 and 69 at present.
Ms Ardern will table the petition in Parliament this afternoon.
She told the breakfast meeting that her own mother had been diagnosed with breast cancer.
"I knew something was wrong on March 4, 2014, when I got a text message from my father, who doesn't text often."
Ms Ardern said her mother "considers herself one of the lucky ones".
"Yesterday I called her and said, 'Mum, there's a breakfast this morning, what's one message you'd like me to share'. She said, 'Even if you have a mild suspicion, do something straight away, no matter what'. She then paused for a second and went on to add, 'even if you are the kind of person who puts everybody else first'. Now, that's my mother to a T."
Ms Ardern said her mother also told her about her great aunty, who ahead of her 70th birthday realised she was about to lose her right to free screenings, and got her last - which revealed breast cancer.
According to the Breast Cancer Foundation, a women's risk for breast cancer is higher in her 70s than at 50. The cost of a mammogram by a private provider is about $150 to $200.