A woman who defecated and then smeared faeces in a police van before spitting at two officers has avoided jail.

Phillippa Kate Duane, 36, appeared in Fremantle Magistrates Court on a string of charges, including assaulting two public officers, criminal damage and disorderly behaviour, two counts of fraud and one count of cannabis possession.

The court heard police were at a property in the Perth suburb of Coogee on June 10 where Duane was behaving in an erratic manner, The West Australian reported.

She was escorted to a police van, where she defecated and smeared the faeces on the floor.

Perth woman Phillippa Kate Duane (pictured) faced court on a string of charges

She was driven to her home in Rivervale, where she then spat at two police officers but narrowly missed.

Her lawyer Rachel Colgan told the court her client had needed clinical treatment for long-standing issues.

Duane told Magistrate Peter Malone the incident in June was the worst day of her life.

The magistrate branded her acts as disgraceful for an intelligent woman who had lived overseas.

The court heard Duane defecated and smeared faeces in a police van in June (stock image)

The court also heard Duane sold a necklace and watch belonging to her estranged husband without his permission to Cash Converters on two occasions.

She was also found in possession of 12 grams of cannabis in South Lake on June 22.

Duane escaped sentencing but was ordered to pay more than $2,800 in fines, including $1500 for assaulting police officers and $300 for disorderly behaviour.

She was also fined $200 for criminal damage, $170 for van cleaning costs, $200 for being in possession of a prohibited drug and $300 for fraud, along with $225.30 in court costs.