Alisha Lauren Hendren-Krippner was incredibly loved — her father's "pride and joy".

With a beautiful laugh, she was someone who would light up a room when she walked in, her family says.

At 30 years old, she had a whole future ahead of her.

Her father Calvin Krippner said, "She had so much to give."

In August 2025, her life was brutally cut short at the hands of her partner.

Tobias Marcus Nuttall, 33, murdered his girlfriend in a frenzied attack after an argument over a rent inspection.

Nuttall admitted fatally stabbing Alisha nine times with a 25-centimetre-long dagger at her Perth home.

Alisha died in hospital after suffering deep penetrating stab wounds to her neck and body, and other injuries to her head and arms.

On Thursday, he was sentenced in the Western Australian Supreme Court to life in prison, with parole eligible after 18 years.

"You attacked Alisha in a vicious and completely uncontrolled manner," Justice Amanda Forrester said.

"You not only took Alisha's life ... but you have been responsible for shattering the lives of countless others.

"Her family will never be able to recover from the violent manner in which she was taken."

In his victim impact statement read to the court, Alisha's father shared the profound impact of their loss.

"Part of me died that day, too," he said.

"A father should never have to bury his child.

"Alisha was my daughter, my pride and my joy."

Her mother, Anita Krippner, said her family was trapped in a nightmare.

"There are moments when it does not feel real," she said.

"The sadness is overwhelming."

Nuttall, who has a philosophy degree, was found with blood-covered hands at the scene and a 25cm dagger after he called triple zero.

The former service station attendant, who had been kicked out of his mother's home due to his drug use, claimed Alisha initiated the altercation, picking up the knife during the argument about the state of her home before the rental inspection.

He asserted Alisha hit him, and he flew into a rage and tackled her, later admitting to first responders he had killed her.

Justice Forrester said she was unable to determine exactly what happened at the home.

The court was told the attack happened soon after the pair had returned to Perth from a trip to Sydney, where they had used illicit drugs and argued as their relationship unravelled.

"I'm in a fairly evil situation," Nuttall said in a text message to his father before he murdered his lover.

"What should have been divine was hell."

Nuttall was later found to have methamphetamine in his system, with the court hearing he was likely coming down from the effects of the drug when the attack happened.

His lawyer Simon Watters said Nuttall was genuinely remorseful and felt vile over the incident.

Justice Forrester rejected this, saying Nuttall had sought to intellectualise his actions and had not fully taken responsibility for them.

Nuttall was the co-host of a conspiracy theorist podcast called WakingWorld before his arrest.

"Alisha was more than a statistic."

Speaking outside court, Alisha's cousin Amber Tassone called for more action to stop domestic violence.

"Domestic violence continues to devastate families and communities across Australia," she told reporters, per ABC.

"Every woman deserves to feel safe in our own home and relationships, and we must do more to raise awareness for domestic violence and hold perpetrators accountable.

"Alisha was more than a statistic, she was just a girl with aspirations, dreams, interests, friends and family.

"We will never be able to overcome this unbearable and violent tragedy but we owe it to women in Australia to support other women, raise awareness for domestic violence and give a voice to survivors and victims."

— With AAP.

Feature image: ABC.