A double to Joan Kuman gave PNG a 14-6 lead at half-time over the girls from far North Queensland.
PNG proved too strong in the second half leaving their opponents scoreless.
Tries to Delilah Ahose and Elvinah Aaron helped PNG steer home to a comfortable win.
The Orchids will return to the country today.
Meantime, the final 24-player squad for the Women’s Rugby League World Cup will be named early next week.
Photo credit: PNG Orchids Facebook Page