A WOMAN who killed her teenage son by stabbing him as they argued at a Perth bus station has pleaded guilty to manslaughter after fighting a murder charge.
Tanya Mynette Ugle, 37, had been thrown off a bus for disorderly behaviour.
She was seen arguing with 18-year-old Jamahl Jordan Ugle moments before the attack in Fremantle on the afternoon of November 23, 2016.
Ugle stood trial before a judge-alone in the Supreme Court of WA on Monday.
But the Director of Public Prosecutions accepted her guilty plea to manslaughter on Tuesday.
She faces a sentencing hearing on Friday.
The court heard on Monday a transit officer testified in a written statement that Jamahl was breathing frantically, holding his hand over the puncture wound and repeatedly saying “it hurts” before slumping on a bench while Transperth staff applied first aid.
The transit officer and a colleague chased Ugle to a nearby shopping centre, grabbed her and put her in handcuffs.
When they asked her “what did you use?” she allegedly replied “tweezers”.
One of the police officers who arrived moments later said Ugle was swearing and screaming incoherently as they tried to inform her of her rights, and was “clearly drug affected”.
According to the policeman, she said “he pushed me – he beats me” before a kitchen knife with a bent end was found tucked into her pants.