Allison Baden-Clay's parents say they were gradually cut off from their daughter in the months prior to her murder and wish they had done more to help her escape a controlling marriage.

Today, Geoff and Priscilla Dickie told a Brisbane media conference they had decided to tell their story in support of the Allison Baden-Clay Foundation, hoping it would prompt others to look for the warning signs of domestic violence among friends and family.

They said their daughter became increasingly isolated from friends and family before she was murdered by her husband Gerard Baden-Clay in 2012.

Gerard Baden-Clay was jailed for life in 2014 for Allison's murder. (AAP: Queensland Courts)

"We knew Allison was strong and we thought, 'this is going to work out without our interference' so we didn't interfere, and we thought it'd work out but apparently it didn't," Mr Dickie said.

Mrs Dickie said when she tried to raise concerns, her son-in-law told her to "butt out".

"We feared that anything might happen to her if we interfered — that he would take it out on her or the girls, that was our main worry," she said.

"I think she was very frightened of him — he was a very dominating man. He ruled the roost, regardless."

Baden-Clay was convicted of Allison's murder in 2014 and is serving a life sentence in prison.

Allison Baden-Clay became cut off from her parents in the months before she died. (Facebook)

Mr Dickie said he hoped sharing his daughter's experience would help other domestic violence victims.

"In Allison's case, there were three main signs that were noticed over time: gradual isolation, control of finances and reduction in level of self-esteem," he said.

"They are just three signs of many in which little things happened over a length of time that can be easily overlooked.

"Often domestic violence is stereotyped, but we've all come to realise it can happen to anyone in any form of life.

"Allison was a highly educated and generous woman, and it is important to our family that Allison's legacy is a positive one and that by sharing her story she may help others."

The Allison Baden-Clay Foundation is partnering with Griffith University's MATE Bystander Program, which trains people in how best to approach someone in an abusive relationship.

Griffith's program is targeted towards business and corporate environments to teach people how to identify and handle a domestic violence situation.

Domestic violence expert Professor Paul Mazerolle from Griffith University said social and financial isolation could often be early warning signs someone needed help.

"It's very hard for a woman experiencing domestic violence or isolation to break through.

"It's about educating people that these are warning signs, and that there's an opportunity to intervene that's sensitive and careful.

"We think having the conversation is worth taking the risk. Yes, these are private matters, but they can also be matters of life and death."