NSW's City and Country sides battled out an 8-all draw in the play-off for third earlier in the day with the match to that will also help pick the NSW Under 19s side.
NSW Country crossed first through Sophie Clancy before City hit back five minutes later through Leilani Wilson, who ran a strong line on the left edge.
Bench forward Matilda Jones charged her way over the line to get Country back in front in the 12th minute.
Some desperation defence from City fullback Cassey Tohi-Hiku stopped Charlize Lloyd-Phillips on her way to the line in one of the tackles of the tournament.
A try to Andie Robinson in the 34th minute levelled the scores with six minutes remaining with both sides unable to come up with a match-winning play late.