In August, the 25-year-old and five others were reported to police by neighbours because of the amount of noise they were making at a luxury Airbnb property on the Mornington Peninsula.
The gathering was a breach of COVID-19 restrictions, which required all Victorians to be home, and the partygoers were each fined more than $5500 by police.
Racing Victoria also punished Ms Kah and the other jockeys she was with – Mark Zahra, Ben Melham Ethan Brown and apprentice Celine Gaudray – by handing them three-month suspensions.
Ms Kah was then given a further two-month suspension for giving “false and misleading evidence” to racing stewards.
The officials have claimed when they asked her “who ended up being at the party” she failed to mention Mark Zahra’s name.
Today Ms Kah’s defence lawyer described the case against Ms Kah as “confusing”, saying her omission was not untruthful and that the tribunal wanted to convict her for answers she didn’t give about questions that weren’t asked.
Lawyers for Racing Victoria said it was Ms Kah’s silence that made her evidence false and misleading.
A judge is set to decide if the extra two-month suspension remains in place.