Zhao was sentenced to five months home detention after paying the full reparation amount of $13,000.
The court heard how the casino became suspicious after analysing the pair's loyalty cards which showed both were winning "well beyond the game of chance".
"The wins were far too frequent," said Judge Connell.
"It was far too much money and it was that which set the Sky City staff on the course investigating."
The dealer and mastermind of the scam, Bo Du, 33, was sentenced in January to nine months home detention and ordered to pay reparation of $26,000, after she allowed the pair to place bets after the roulette ball had dropped into the winning number slot.
Du circumvented the electronic cut-off for final bets by deliberately releasing the ball early - removing the element of chance and causing the casino to incur substantial losses.
Lu approached Du, a dealer at the casino for six years, in 2011 and agreed that when she or her former partner, Zhao, appeared in the casino Du would influence the game.
The Department of Internal Affairs was called in after the casino discovered irregularities with the rapid roulette game.