More than $40,000 has been donated to murdered woman's Blessie Gotingco's family since they announced they want to hold the Government accountable.

The family say they want to bring a civil suit against the Department of Corrections to hold them responsible for the "mismanagement and non-monitoring of evil" over the killer who took her life.

A family's grief - Antonio Gotingco comforted by his tearful son at the memorial service holding the ashes of his wife, Blessie Gotingco in June last year. Photo: Peter Meecham.

Antonio Gotingco, Blessie's husband, says he will follow murderer Tony Robertson "to the gates of hell", during an interview on Newshub's 'The Nation'.

A handcuffed Tony Roberston arrives with a heavy prison guard foe his Appeal in the Blessie Gotingco murder case. Photo: David White/ FAIRFAX NZ.

"Anybody who put that criminal in our neighbourhood has blood on their hands ... If this had happened in other countries ... people resign."

A Give A Little page - Justice for Blessie - was launched on Friday evening for the family's cause and about 1300 people had donated $40,800 by 10am on Saturday.

Blessie Gotingco, murdered while walking home after work on May 24 2014. Gotingco, a mother of three, had migrated to Auckland from the Philippines with her husband Antonio. Photo: Supplied.

In an open letter to New Zealand, the Gotingcos called for the support of New Zealanders as they raised money to undertake their own review of the case. If the review showed they have legal grounds, they would file a civil case against Corrections.

Gotingco, 56, was raped and murdered returning to her Birkdale, Auckland, home on May 24, 2014.

He then raped Blessie Gotingco, stabbed her to death and dumped her body in the Birkenhead Cemetery.

Tony Robertson appears for sentencing over the murder of Blessie Gotingco. Photo: Chris Skelton/FAIRFAX MEDIA.

Robertson was released from prison five months earlier for abducting and indecently assaulting a child and was subject to an extended supervision order which included 24-hour GPS tracking.

Antonio Gotingco says in the open letter that the release of Robertson was "like putting a snake in a hen house".

"We lost our beautiful Blessie at the hands of an evil person who was supposed to be under strict monitoring in the community by authorities to whom we have entrusted our lives for protection," he says.

"The Government, particularly the Department of Corrections has given a new meaning to ineptitude and stupidity. The Government sounded the death knell for Blessie by failing miserably to deliver the primary role of governance which is to ensure its citizens are safe and secure from the scum of society.

"Its decision to put a sadistic, unreformed criminal in our neighbourhood sealed the fate of our much-loved Blessie. It was like putting a snake in a hen house".

Antonio Gotingco says Corrections never properly monitored Robertson and it was only a matter of time before he would commit another crime.

"And yet they continue to add insult to our injury by claiming that they have exceeded standards in their management of this hardened criminal. For us, hearing these pronouncements is like rubbing salt to our raw wounds".

He says while it was the family's hope that no other family would experience the tragedy they went through, there was no guarantee "unless we get our acts together".

"We are now facing the biggest challenge of our life by considering filing a civil case against the Department of Corrections for the wrongful death of my wife, our beloved Blessie. It's tough enough, and the Government is not providing us with legal assistance - a sad irony considering that they are all too happy paying for the legal expenses of Blessie's murderer."

He called for the help of New Zealanders to stand by them by donating towards the costs they would face.

"We [are] counting on your help, even if it is only $1, it will help us expose the sham that is the management of sex offenders in New Zealand. We need to put a stop to this vicious cycle of ineptness and stupidity in the justice system. We firmly believe that a civil case against the Department of Corrections is our only option and a worthy course of action.

"Together let us show them the power to the people. Never again! We all deserve better".

- Stuff