Teresa Bradford turned down an offer of safe housing days before her husband broke into her home and murdered her in front of her children.
Support group DV Connect says it made the offer to Mrs Bradford after being told by police she was scared of what her husband would do.
"We'd been advised that she was afraid and so we contacted her," chief executive Diane Mangan told AAP
Ms Mangan said the group offered to help Mrs Bradford and her children to move to a safe place but she declined because she believed a a longer-term housing group was about to offer her a new home.
The mother-of-four was stabbed to death on Tuesday morning at her Pimpama home by her estranged husband David Bradford, who later killed himself.
He committed the murder two weeks after being granted bail over a violent November attack in which he choked and bashed his wife. The couple's four children were at home at the time.
After the November attack, DV Connect organised a safe room in a motel for Mrs Bradford and the children.
They also organised a place in a refuge where she and her children could live while she got back on her feet but Mrs Bradford opted against taking the offer because her husband was in jail at that point.
"He'd been detained, so she didn't feel she needed it," she said.
Bradford was later given bail on January 12 by a magistrate serving on a specialised domestic violence court, despite police pleas to keep him locked up because he was considered dangerous.
Close friend Karina Mason claims Mrs Bradford didn't know Bradford was seeking bail until he was released.
Anti-violence campaigner Rosie Batty says police should have told her he was seeking release.
"It is, I would suggest, a police responsibility," Ms Batty told reporters on Wednesday.
She said Tuesday's horrific crime should result in mandatory bail notifications for domestic violence victims, and she said a very vulnerable woman had been failed by the justice system.
"If the police make recommendations, those recommendations should be heeded very seriously," Ms Batty said, adding the magistrate who made the bail decision must now face intense scrutiny.
"It keeps happening and I just feel incredibly sad. These are women who have ... worked towards their safety and they are killed when they do so."
Premier Annastacia Palaszczuk has indicated the Queensland government was willing to tighten bail laws but won't make a decision until the police investigation is finished.
Anti-violence campaigner Di Macleod said Queensland's legal system wasn't providing adequate protection for domestic violence victims.
"There's a presumption against the granting of bail where there's a history or threat of domestic violence in most Australian jurisdictions. There's not in Queensland."
A fundraising page has been set up to support Ms Bradford's children. It can be found at https://www.gofundme.com/JusticeForTeresa
National domestic violence helpline: 1800 737 732 or 1800RESPECT. In an emergency call triple-zero.
Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14.
MensLine Australia 1300 78 99 78.