Certainly Josh Addo Carr - widely regarded as the fastest man in league - would be proud of the Shellharbour product's game-winning runaway effort to get the NSW Under 19s side over the line on Friday night.

With her side trailing 12-10, and with 14 minutes left on the clock, Berry was given a narrow corridor on the Blues right flank and it was all she needed, shooting away from the cover defence on an 80-metre dash to post what proved the winning try in a 16-12 win.

The greasy conditions might have tempted other wingers to shift infield, a high percentage play, but Berry said she didn't think twice about going foot to the floor.

"[Centre Andie Robinson] gave me the all pretty early so it gave me some room on the outside," Berry said.

"I just backed myself and lucky I didn't get ankle-tapped. If I have room, I'll always back myself. If it's not there I'll step back in but when I see that kind of space I'll definitely take it.

"The game went by so quick so I didn't know there was 14 minutes left or how long there was to or anything like that, but it was a really good time to score.

"We're all pretty sore and tired [on Saturday] but it's a really good feeling. It was awesome to get the win."

It was her second try of the match and, while it seemed a remarkable effort, it's something the junior athletics star has produced with stunning regularity in her young career.

She first gained social media attention in the 2019 Tarsha Gale Cup grand final when she turned a running catch of an opposition bomb into a 70-metre solo dash for a key four-pointer in a premiership win.

It was only a matter of months later when she snatched an intercept on debut for the NSW under 18s and went 95 metres - a distance she clocked in 12 seconds with ball-in-hand.

It seems the bigger the stage, the more likely she is to deliver.

"I just try and prepare myself for the big games as best I can and it just happens," she said.

"The moment comes and I just try and take it. I do love the big moments and I just try and embrace them and take the opportunities when they're there."

Having made her NRLW debut for the Dragons last season, she'll be looking to feature in the elite competition again this year, but will first turn her attention the Harvey Norman Women's Premiership finals with Helensburgh starting next weekend.

"We're in the semis this week so hopefully we get a chance to go further and see what we can do there," she said.

"From Tarsha Gale coming up to women's is very different. I think it's better for me to show what I can do and to keep learning about playing at that level.

"Hopefully I get selected in one of the [NRLW] squads this year. it'll be good to keep learning and grab those opportunities."

Progressing to the elite level will require her to bulk up along the way but, somewhat ominously, she feels that could give her an extra yard of pace.

"I've been trying really hard to bulk up and I have put on a bit," she said.

"That's a good thing for me. If you I get too big you can lose some speed but, at the same time, if I bulk up and get stronger I'll get even faster. That's what I'm looking to do."

Fellow Steelers Anji Tau and Chantel Tugaga were mighty for the Blues up front in a win that saw NSW retain the shield first won in 2019 (as under 18s) skippered by another former Steelers standout Maddie Weatherall.

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Fellow Illawarra Tarsha Gale stars Jordyn Preston and Keele Brown were part of the extended Blues squad, with the latter also set to turn out for the Burgh in the club's finals push.