It took two years before Joanne Martell's body was discovered in bushland in Victoria after she was dumped "like a bag of unwanted rubbish".
Nicole Boroviak killed the friendly but nomadic 43-year-old in January 2015 following a "spontaneous burst of anger" after smoking ice.
She jumped on top of the much smaller woman and placed one hand to her neck and one to her mouth.
The two women were staying at a sharehouse together at Dromana on the Mornington Peninsula when an argument broke out between them.
In sentencing on Friday, Justice John Champion described the killing by Boroviak, also known as Nikita Lotus, as physically violent and personal.
"You were much larger and more powerful than her," he said.
"You killed Ms Martell, either by strangling or suffocating her.
"You shook her by the shoulders and said words to the effect that 'she's gone' or 'she's dead'."
Boroviak then threatened to have witnesses in the house killed before scrubbing Ms Martell's body in bleach and wrapping her in woolly jumpers and a bed sheet.
She enlisted the help of her adult son to dump the body in scrub off a walking track at Diamond Bay, Sorrento.
At one stage, Boroviak's son let go of his end of Ms Martell's body, said he couldn't do it and returned to the car.
After a protracted police investigation, Boroviak's son was arrested and he led investigators to Ms Martell's body.
"You should be ashamed for involving him in that way," Justice Champion said.
Boroviak, 44, pleaded guilty to manslaughter in July.
She claimed she suffered a "payback" assault later in 2015 after returning to the Mornington Peninsula during which she was raped, beaten with a baseball bat, rolled up in carpet, and had her life threatened.
Justice Champion accepted Boroviak was seriously assaulted and now suffered post traumatic stress disorder and required pain medication, but refused to accept it was "payback" for Ms Martell's death.
He accepted Boroviak suffered borderline personality disorder, had experienced a traumatic background and struggled to control intense emotions.
"I accept (the killing) was spontaneous at a time you were affected by drugs and your anger got the better of you," he said.
Ms Martell's sister Joanne Bennet told a previous court hearing the last moments of her sibling's life "haunts me".
"It was my worst nightmare come true ... dumped at the beach like a bag of unwanted rubbish," she said.
Boroviak was jailed for nine years with a minimum of six years. She has already served 646 days in pre-sentence detention.
Australian Associated Press