Rapes of young people prompted Jolene Morrell to call a hui for Flaxmere families on Saturday.
While police were calling for more information, she thought bringing the issue to greater attention might help.
"Someone's memory might come alive if they hear more information being pushed out there," she said.
Police and volunteer community patrols attended the hui at the Flaxmere Age Concern Hall, as did Waikato campaigner Cherie Sweeney of NARK - The Nation of Advocates for the Rights of Kids.
Ms Sweeney formed the anti-child abuse organisation after being branded a nark for speaking to police about the death of her infant neighbour in 2011 and decided to turn the label into a positive campaign.