A Mandurah woman has been sentenced to a nine-month community based order and 50 hours of community work for obstructing police.
Loana Kemisa, 19, appeared in the Mandurah Magistrates Court on Tuesday after pleading guilty to four charges, including disorderly behaviour in a police station and obstructing public officers.
Police prosecutor Tamara Read told the court Kemisa's spate of abuse occurred about 3.35pm on November 10, 2018.
Police attended an address to deal with another matter and were attempting to get a male into the back of a police vehicle when Kemisa approached police and grabbed an officer's hand to remove it from the male.
"She screamed 'get off him b***h, you don't even know the story'," Senior Constable Read said.
She was advised to back away but continued to scream abuse at the officer.
Kemisa refused requests from police for personal details and was taken back to the Mandurah Police Station.
"On route to the station, the accused kicked the side of the car and continued screaming," Senior Constable Read said.
The 19-year-old yelled abuse at officers at the station and prevented officers from getting fingerprints to determine her identity.
Kemisa's lawyer Clare Hay told the court her client had taken part in one session of a pre-sentence opportunity program to tackle a problem with alcohol.
She said her client felt "ashamed" and remorseful of the way she acted.
"She had been drinking … she escalated," Ms Hay said.
"This whole process has awoken her that she is affected by alcohol far too easily."
Ms Hay asked Magistrate Anne Longden to grant her client a spent conviction in order to obtain police clearance for work.
Ms Longden said the offences were too "inappropriate".
"You've already been granted a spent conviction as an adult," she said.
"You've demonstrated an attitude towards authority that leads me to believe you could act this way in the future."
Kemisa was sentenced to a nine-month community based order and 50 hours of community work.