The estranged family of Stacey Train have opened up about how their daughter made one decision that eventually saw her killed.

Stacey was killed along with her husband Gareth Train and his brother, also her ex-husband Nathaniel Train, on December 12 after police responded to a missing person’s report.

Constable Rachel McCrow, 29, and Constable Matthew Arnold, 26, were also shot at the Wieambilla property, three hours outside of Brisbane.

Now Stacey’s family members have spoken about how she was raised religious but eventually left the family as a teenager to join the independent church of Ronald A Train – her husband’s father’s church.

“I wish she never did.This would never have happened,” the relative, who asked to remain anonymous, told The Guardian.

“I knew Gareth was an arsehole when he took over his brother’s wife,” the family member continued.

“It was all downhill from there. Now she is dead because of them.”

The family member also said that Gareth “was a control freak” and that Stacey “could never say anything”.

Another family member said she saw Gareth drag Stacey up the stairs by her hair.

Their comments come just days after Gareth and Nathanial’s dad Ron appeared on A Current Affair speaking about their gun obsession and leaving Christianity.

Mr Train explained that he raised his sons with Christian beliefs but they turned away from religion before becoming estranged from their parents when they were in their 20s.

“They went down this track, this dark track, which we have no understanding of.”

Mr Train said he broke down in tears after hearing what his sons had done, saying he couldn’t take responsibility for their actions or defend them.

“I cried out to God, because, you know, I’m a believer. I just could not understand,” he said.

“Those decisions were made as adults. I can’t accept responsibility for something in an adult mind.

“There’s no excuse for that. No excuses for their behaviour, and I don’t excuse my boys of their actions at all.

“They’ll stand before God in this world. They can’t be brought to justice in the secular world, but they will before God.”

Constable McCrow and Constable Arnold will be farewelled at a funeral service at the Brisbane Entertainment Centre at 10 am on December 21.

Details on how the public can offer their condolences will be available in the next few days.

Images: Facebook

This article first appeared on Over60.