A woman is to sue the government after her daughter was murdered by a man who was freed from a life sentence.
The body of Naomi Bryant was found at her Winchester home
Sex attacker Anthony Rice, 48, was freed nine months before he stabbed Naomi Bryant in her home in Winchester in August last year.
Lawyers had won Rice his freedom on human rights grounds but an inquiry by the chief inspector of probation said he was "too dangerous" to be freed.
Verna Bryant said she wanted to get the legal system changed.
Rice strangled Ms Bryant, 40, and stabbed her to death only days after they had met in the city, where he was living at a charity-run hostel.
He had previous convictions for indecent assault and rape and had been given a 10-year minimum term at the Old Bailey in 1989 for attempted rape.
Two parole requests were turned down before he was released in November 2004 - having served more than 15 years - after his solicitor claimed his human rights were being contravened by his continued imprisonment.
The Parole Board concluded he presented only a "minimal risk".
'Can't give up'
Mrs Bryant, 68, said: "I hope that I can get things changed, so that this can't happen again.
"I want something to happen so there are no more victims like this and if just one person is saved then my daughter's death was not for nothing.
"This weighs me down and I feel very strongly about this, I can't afford to give up now.
"I want the system changed. There seems to be incompetence at the moment."
She added: "I think by letting him out when he was on a life sentence and knowing he was a dangerous man and not being monitored, they have made a mistake.
Verna Bryant said Rice should not have been released
"Everybody's got human rights but when Anthony Rice killed my daughter, he took away all her human rights.
"I do believe in human rights for people but the ones who are ill and sick like Anthony Rice, I think they have to be monitored."
A Home Office spokesman said they had not received notification of the claim from the family.
Liberty, which is advising Mrs Bryant, said it would argue that her daughter's human rights were violated by Rice's early release.
Its director Shami Chakrabarti said: "The Bryant family deserve justice for their terrible loss and a real sense that others will be better protected in the future.
"The Human Rights Act is the best hope for victims who in the past had only limited redress against the government.
"To date, there has been no public investigation into Rice's release. The family has received no compensation, nor a ministerial apology."