A woman accused of lighting a fatal fire in Sydney's south last year, then tampering with a water meter so a hose could not be used to put out the blaze, has been granted bail in the NSW Supreme Court.

Amanda Zukowski, 46, was charged with murder in June this year after her partner Jeffrey Lindsell, 39, was severely burned in the fire at his Gymea granny flat in the early hours of October 7, 2017. He died in hospital two days later.

Jeffrey Lindsell died two days after the fire in October 2017.

On Thursday, Ms Zukowski applied for bail at the Supreme Court in Sydney, appearing via video link from Mary Wade Correctional Centre at Lithgow.

DPP solicitor Raffaella Buttini opposed bail, saying Ms Zukowski has a history of aggression and violence and has provided multiple versions of what happened on that night, which might suggest she's trying to "cover something up".