The mother of a Manitoba girl has renewed hope that police will finally catch her daughter's killer.

It follows an unprecedented move by RCMP to collect as many 2,000 DNA samples from men and boys between 15 and 66 in Garden Hill First Nation.

Teresa Robinson was last seen leaving a birthday party in the community May 5, 2015.

Her remains were found six days later, a discovery that's shattered her mother Sandra’s sense of security.

"Don't trust anybody. Don't trust anybody around here, even friends because we don't know who did this. People probably won't even believe who that person is when it comes out,” said Robinson.

Luke Taylor's son was beaten to death eight years ago in the community, and said he will give a sample.

“Sad. I know how it feels to, the loss of a child. Because of myself. It's very painful."

But not everyone in the community is expected to comply.

Band Councillor Larry Beardy gave a blood sample to police, and said he's aware of at least one man who doesn't plan to provide a DNA sample.

“I told him if you've got nothing to hide you shouldn't refuse, if you're innocent you've got nothing to hide,” said Beardy.

With no arrests, and no breaks in the case to date, Robinson’s mother hopes DNA will soon provide the answers she's been waiting for.

“A lot of people keep saying you have to try and forgive that person too, but I don’t know who that person I don't know if I can do that,” said Sandra.

RCMP plan to make up to five trips to gather DNA samples with the hope of bringing closure to Robinson’s family and the community.

The Garden Hill First Nation Band said RCMP investigators will return to the community in three to four weeks to collect the next round of DNA samples.