The mother of a young woman brutally stabbed 78 times by her ex-boyfriend has welcomed an appeal to her murderer's sentence.
Mackenzie Anderson, 21, was violently stabbed to death by ex-boyfriend Tyrone Thompson in 2022 while he was on parole and subject to an apprehended violence order.
But earlier this month, Thompson was jailed and handed a non-parole period of 15 years and six month at the Newcastle Supreme Court, a sentence that outraged the victim's family.
A DPP spokeswoman confirmed it would appeal the sentence, with the appeal to be filed on Thursday morning.
It was welcome news for Ms Anderson's mother Tabitha Acret, who described the sentencing as one of the worst days of her life.
"We're never going to be celebrating anything in this case, unfortunately, but we are very happy the DPP has approved this," she told Nine's Today.
"This is a really important case to the nation, because it's not just about how our family feels about this, but about the precedent this sets for law moving forward, and that other violent offenders can't quote this case to get lighter sentences."
Thompson was given a maximum of 22 years and six months in jail by Justice Richard Weinstein, who said the brutal murder of the mother-of-one was a frenzied attack of such ferocity that one of the two knives he used snapped.
Justice Weinstein said the Crown submitted that the seriousness of the crime was aggravated by previous domestic violence in the relationship, Ms Anderson's fear of Thompson and her attempts to end the relationship, which he refused to accept.
But he added Thompson's significant mental health issues, the domestic violence he suffered as a child at the hands of his violent, schizophrenic, drug-addled father, his difficult schooling and exposure to drugs had diminished his moral culpability.
After the sentencing, Ms Acret described it as "an insult to women globally".
"I'm hopeful this is starting a larger conversation across Australia about domestic violence, about sentencing, about prevention, because sentencing is one piece of the puzzle, and it's a small piece of the puzzle," she said after the appeal was confirmed.
"We really have to be focusing on how we can prevent this, because once we get to sentencing, trauma has happened, and the trauma for my family can never go away."
Thompson and Ms Anderson had been involved in an on-again, off-again relationship, marred by domestic violence, since late 2019.
He was jailed in October 2021 for assaulting Ms Anderson, intimidating her and destroying her property before being released on parole on March 9, 2022.
Thompson, who ignored an apprehended domestic violence order banning him from contacting Ms Anderson, killed her 16 days later after breaking into her apartment in the Newcastle suburb of Mayfield.
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