Sarah Jane Finn, the punters' pusher, the Melbourne Cup cop shover, the devil in that fitted bright blue dress, sat in court three saying nothing.

Immobile in the front row, hands of pink nail polish folded neatly on the lap of a darker (more court appropriate) blue dress, she listened to the details of other peoples' drug offences and unlawful assaults, breaches of intervention orders and drink driving pleas, surrounded by lawyers in baggy charcoal suits and clients in tattoos.

Charged with the infamous and viral assault of a police officer at the 2015 Melbourne Cup, Constable Emma DeBruyn detailed the offence.

"The victim," she said, "was on duty wearing full police uniform."