Experts have ruled that a domestic violence victim who stabbed her boyfriend to death has 'battered women's syndrome'.
Sophie Butler, 20, killed Norasab Hussain just minutes after he called her a "whore".
In a voicemail message to her mother he added that she should open a brothel.
Minutes later she attacked the 33-year-old at 4am on May 30 last year, and he died of an 11cm deep stab wound.
He was only discovered at 2pm on May 31 when Butler leaned out of a window and shouted: "Help, help, he is dead, I have killed him."
Butler, of Stoke-on-Trent, Staffordshire, denied murder when she went on trial atLeicester Crown Court earlier this week.
However yesterday she admitted manslaughter on the grounds of diminished responsibility.
Prosecutors accepted the plea after the court heard Mr Hussain had a "propensity to be violent towards women".
Two psychiatrists have ruled Butler was suffering from 'battered women's syndrome' after enduring repeated domestic abuse from her boyfriend.
The court heard she had told friends, family, her employer and medical staff that she was "subject to ongoing domestic violence at the hands of Mr Hussain".
Prosecutor John Lloyd-Jones QC said: "She admits unlawfully killing Mr Hussain. She acquired a knife and delivered a blow into his chest with some force.
"She admits she is guilty of manslaughter by reason of diminished responsibility, which is a partial defence to murder.
"It applies when someone kills somebody else and they are suffering from an abnormality of mental functioning arising from a medical condition which impairs their ability to act.
"Depression and post-traumatic stress disorder are commonly together known as 'battered women's syndrome'.
"There is also strong evidence that Mr Hussain had been abusive towards former partners.
"By his guilty pleas to criminal offences, it was clear proof he had at times a propensity to be violent towards women he was in relationships with.
"We take the view the right thing to do was to accept from her that plea to manslaughter.
"Regardless of his conduct, past or present, he did not deserve to die."
The trial previously heard Butler and Mr Hussain had argued after returning home to his flat in Cobridge, Stoke-on-Trent, after a night out.
After the argument Mr Hussain left a voicemail message on Butler's mother's phone calling her daughter a "whore".
He said that she should have opened a brothel.
She told told police her partner had stabbed her in the stomach with a knife and claimed she had reacted and stabbed him with a pair of scissors.
But prosecutor Mr Lloyd-Jones told the jury her wound was shallow and self-inflicted in a bid "justify what she had done to try to shift the blame from her to Mr Hussain".
Butler was remanded in custody until Monday.
When she returns to court after the weekend she will be sentenced for manslaughter.
Judge Nicholas Dean QC said: "Mr Hussain did not deserve to die on May 30.
"I hope his family might feel assured that he will not be forgotten in all of this."
Speaking after the hearing, Mr Hussain's loved-ones said they are demanding answers about what happened in his flat that night.
The grieving family added: "Sophie Butler hasn't given us the details of what happened that night and we want to know what happened to him.
"Everyone has problems in relationships but no-one deserves to be killed."
Staffordshire Police have welcomed Butler's guilty plea.
Detective Chief Inspector Dave Giles said: "The guilty plea to manslaughter is a positive outcome which fully takes account of Sophie Butler's actions in that she unlawfully killed Norasab Hussain."
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