Wallaroos head coach Jo Yapp was left frustrated at their discipline and lack of game control after a disappointing 36-10 defeat to Ireland.
The Irish controlled the majority of the match and powered their way home to defy their ninth ranking and show the form that got them into WXV 1.
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Australian trailed 12-5 leading into the break before a sloppy mistake allowed Ireland to strike, eventually running out with the win thanks in part to Sevens stars Stacey Flood and Eve Higgins off the bench.
"Our discipline let us down early on and we didn't get an easy entry into their half and we just couldn't seem to get out of ours," Yapp said on the post-match coverage.
"A lot for us to work on around that breakdown area and a few other bits, but on the whole just a little bit frustrating.
"It's our first hitout. We had new combinations and caps out there so it was good to see them get the chance."
The Wallaroos made several changes leading into the game, with Natalie Wright and Faitala Moleka enjoying a mixed afternoon as the new halves partnership.
Versatile forward Ashley Marsters slotted in at hooker and scrummaged well, although struggled at lineout.
"We had three new debutants today and a new nine and ten so going into a World Cup, it's really important that we build that depth," Yapp added.
"But on the whole, We're just disappointed with our energy out there and we need to bounce back for next week."
The Wallaroos will head to Newport as they prepare for back-to-back matches against Wales.
"These games are a good opportunity to see what we've got and playing Wales in Wales, it's a big game for us," Yapp added.
