The pair then pushed at each other, before the older sister allegedly bashed her sister with a drying rack from the kitchen sink, reportedly hitting her over the head and back with it.
It’s claimed the older sister then picked up a knife and lunged at her sister with the knife - prompting the younger sister to find her mobile phone and film the encounter. During the ensuing minutes, it's alleged the older sister used a plastic spoon and a metal pot to assault the teen.
The younger sister told police it was only later that she realised that blood was coming from her left arm, the result of an apparent knife wound.
The alleged attacker then drove off, while the younger sister called another relative for help. The older sister was later apprehended at a local service station - and claimed that she was in fact attacked by the 16-year-old with a rolling pin and saucepan.
Police eventually found the younger sibling in Wollongong Hospital seeking treatment for the stab wound - leading authorities to later charge the older sister with with wounding with intent to cause grievous bodily harm.
Despite the accused promising to abide by strict conditions if granted bail, Magistrate Susan McGowan refused the application on account of the seriousness of the allegations.
‘It's been a long time since I've seen such an alarming set of allegations,’ she said.