Today a jury found Anna Browne guilty of murder after a nearly three-week long High Court trial. Photo / Peter Meecham.
Graphic content warning: Some readers may find this story disturbing
She plunged the knife deep into her friend's face without flinching.
Others could only watch and scream as they caught glimpses of the horrific moment a butcher's blade cut a vital vein in the woman's neck.
They're now haunted by the sound of the knife being pulled out.
This was no "ordinary pamper party" and eventually led to nearly three weeks of nightmarish, tearful testimony and lengthy legal arguments as those involved re-lived that fateful Saturday afternoon.
One of the women was 36-year-old Carly Stewart - another was her eventual killer.
It may never be known what the murderous mindset of 37-year-old Anna Eiao Browne was, but weeks have been spent during a trial in the High Court at Auckland trying to find out.
They delivered their decision in front of a packed, tearful and gasping public gallery... and a motionless Browne.
The women at the party all knew of each other, many had been friends since their school days, many were now mothers.
They were close and called each other girls - they called each other sisters.
Bottles of bourbon and vodka were bought, snacks and guacamole, the beautician set up her table in the lounge before the pamper party officially began at 1pm.
As the drinking grew the party was streamed live on Facebook, parts of which were played in court, and it showed a room full of smiles and laughter.
"[It was] supposed to be a good day - everyone was looking forward to it," the party's host Emmanuelle Sinclair told the court early in the trial.
One of Stewart's friends, Corrin Phillip, who is affectionately known as "Little Corrin", said, "We're happy, we're all happy".
"Carly was getting her nails done, she was happy," the smaller Corrin said.
However, as the afternoon progressed Browne became increasingly "aggressive and irritated" with others.
Browne's agitation further brewed, accusations involving drugs were exchanged, and Browne started abusing guests, witnesses testified.
Stewart intervened.
The women at the party described how she dominated, intimidated and scared Browne, telling her, "you f*** disrespectful b***, my nieces are f*** here".
"She had a look about her, I could sense something was about to happen.
"I called out to my daughter to just get outside, get out on to the deck."
Browne walked right past her without flinching, she was fixed on Stewart, in what her defence lawyer Marie Dyhrberg QC would later describe as a trance-like state.
Browne then lifted the knife and plunged it deep into Stewart's face.
"I could see her removing - the knife coming out - and I could even hear it," Patricia Stewart said.
"She stabbed Carly, and then just walked back out, she was just staring at Carly."
Three of the women called 111 and paramedics began arriving, desperately trying to save Stewart as she lay dying in the lounge.
A fly-through video of the crime scene, played during the trial, showed Stewart's motionless body lying on the floor, medical equipment and blood strewn and splattered either side of her.
Police officers had moved the other guests into the kitchen, where they found the blood-stained knife in the sink.
The mystery of how it got there remains, after a witness saw Browne drop the murder weapon after the stabbing.
But the women were afraid Browne still had the knife and might return to the house, the court heard.
When she did return the remaining guests began to scream.
"You do not go back to be at the mercy of the friends of the person you have just murdered," Dyhrberg said.
"You don't murder someone in front of witnesses. You don't return to the scene after being forcefully ordered to leave."
And she said the police's delay to take a urine test, which eventually came some eight and a half hours after the stabbing, and the lack of a blood test meant it may never be known what was in Browne's system.
"Without timely blood and alcohol tests, we cannot go back in time and find out what was going on in her head," Dyhrberg said.
Pathologist Dr Thambirajah Balachandra, who performed Stewart's autopsy, said a vein in Stewart's neck was severed when the knife cut through her face, deep enough to hit the right side of her throat.
He estimated the wound to be about 11cm deep, while about 150ml of blood was found in Stewart's stomach as well as blood in her airways.
Crown prosecutor Nick Webby said in his closing that Browne's disproportionate response to the scuffles led to her grabbing the knife.
This made her guilty of murder under both its legal definitions, he said, adding that she not only intended to kill when she plunged the knife into Stewart's face, but she was reckless to the dangers of her actions.
Medical experts, he said, had testified during the trial that Browne suffered anti-social and attention deficit disorders.
The defence team's own medical expert had said during the trial that the attention deficit disorder combined with extensive alcohol consumption had a direct relationship to Browne's violence and emotional responses.
These responses were "often out of all proportion to the triggering event", Webby would add.
He also described how, out of all the utensils in the kitchen, Browne chose the largest knife before concealing it behind her back to maintain the element of surprise.