A woman accused of fatally stabbing her housemate with a kitchen knife in their southern Sydney unit on Saturday night will remain in custody until she faces court in April.
Police allege Katherine Abdullah, 31, stabbed Susan Sarkis, 21, in the chest following a violent argument in which a vase was smashed on the ground of their Brighton-Le-Sands unit, police said.
A neighbour, who did not wish to be named, said she heard a woman screaming from the ground-floor unit on Moate Avenue just before 6pm.
"I was hanging out my clothes in the backyard and I heard a woman screaming," she said.
"I've heard them yelling and screaming before, all the time."
Police initially said Ms Sarkis was bashed with a vase prior to her death but detectives later confirmed this was not the case.
Paramedics treated Ms Sarkis on a kitchen floor after a receiving a triple-0 call from a woman police believe was the accused about 6.15pm.
She was taken to St George Hospital in a critical condition but was pronounced dead shortly after arriving.
Ms Abdullah did not apply for bail during her brief court appearance at Parramatta Bail Court on Sunday and Magistrate John Bailey formally refused it.
She is due before Central Local Court on April 2.
St George police commander Superintendent Dave Donohue said both women were known to police but detectives had yet to establish a motive behind the alleged attack.
He said there had been a lengthy altercation between the two women on the night of the death.
Detectives have reviewed CCTV footage of the incident and seized a number of household objects for forensic examination from the two-storey, white rendered unit block.
Supeintendent Donohue said an autopsy would be conducted on Monday and police would wait for results to determine any other circumstances leading to the woman's death.