Wales had been crushed 37-5 by Australia within the WXV marketing campaign in Cape City.
Hooker Carys Phillips’ fall on a kick-off throw-in negated Layne Morgan’s sniper objective to tie the sport at 5-5 after 31 minutes.
However the sport grew to become one-way visitors after Australia’s Eva Karpani pushed previous three Wales defenders earlier than half-time.
Faitala Moleka took the penalty, which was then cleared by full of life winger Maya Stewart and Lori Cramer transformed.
Moleka, Kramer and Stewart had probabilities within the ultimate quarter, with Kramer changing one other, because the Wallabies avenged a pleasant defeat at Newport eight days earlier with a report victory over Wales.
English Alex Matthews will serve as captain The Purple Roses face Staff USA for the primary time within the WXV 1 opener in Vancouver on Sunday at 8:30 p.m.
