AN ANGRY Brihannah Viggiani pushed her good friend down stairs helped by an older woman, then pursued her, punching and kicking her in the stomach as she lay prone on the ground.
"I'm coming for her... I'm going to kill her next time," the teenager threatened just days later on Facebook.
Viggiani, 19, appeared in the dock at Gladstone Magistrates Court and pleaded guilty to assaults causing bodily harm done in company, causing a public nuisance, two counts of wilful damage to police property, and two bail breaches.
Prosecutor Snr Sgt Mark Gorton said Viggiani, along with an older woman, went to the young woman's house in May when she pushed her down the stairs, but the woman got away.
"She (Viggiani) went hunting for her and found her nearby and began punching her in the head many times," Sgt Gorton said.
"Then kicked her in the stomach when on the ground, causing purple bruising to her eyes, grazing and bruising to her cheek, forehead and upper lip, scratches to inside both wrists."
When arrested, Viggiani became bored in her police cell and began tearing up toilet paper and throwing it at the cameras.
Snr Sgt Gorton said police came across Viggiani at 1.30am on May 24 with a group of young people standing near the Dawson Hwy, and she could be heard loudly swearing before saying, "I'm going down the road to kill and bash that c**t".
Police gave her five minutes to go, but Viggiani kept swearing and making threats to kill.
He said Viggiani breached a bail condition by not attending Gladstone police station.
Snr Sgt Gorton said Viggiani, in another bail breach, went on Facebook in June saying she was "coming for her... I'm going to kill her next time after I bashed her the slut ran her mouth out; I'm going to jail because of her".
Defence lawyer Jun Pepito said alcohol was Viggiani's problem and the victim had been her teenage friend.
She was also diagnosed with ADHD and ODD, Oppositional Defiant Disorder - hostile behaviour towards authority.
"When she drinks she becomes a different person. Alcohol is a trigger," he said.
Mr Pepito said Viggiani had previously been sentenced to a six-month term of imprisonment that was suspended for 18 months.
Magistrate Penelope Hay said she recalled the matter in which the argument had apparently been over an ex-boyfriend.
She said the teen became jealous of her friend's contact with a former boyfriend, and this reflected her immaturity and young age.
However, she said going on Facebook and making death threats caused the young victim to endure fear.
Ms Hay made it clear she was not impressed that while under supervision of Probation and Parole Viggiani had not received alcohol and drug counselling programs and had refused to participate.
She said Viggiani was meant to get medical and psychological intervention which had not been offered.
Ms Hay resentenced her to six months jail immediately suspended, to be released under the strict supervision of Probation and Parole for six months that included blood, urine and saliva testing.
She was told to pay $150 compensation to the victim.