After helping the state to its breakthrough win in the Women's National Cricket League, Bracknell teenager Katelyn Fryett became the side's first national representative.

"I'm really excited about it," Fryett said of her call-up to the Australian under-21 squad.

The 17-year-old said it had been a test to stay focused on Sunday's Twenty20 at the NTCA Ground, having learned of her selection on Friday.

"I didn't want to get distracted because I knew we were a good chance to win."

The bowler duly delivered, Fryett's dismissal of the Southern Stars' reigning player of the year Shelley Nitschke helping set up the win over South Australia in which she was the pick of the bowlers.

"She has proved she deserves to be in the squad and it is great that she has been given this opportunity," Tasmanian Roar coach Jade Selby said.

"On Sunday she bowled to Australian players and even got one out.

"Her selection is great for Tasmanian cricket. That's why we needed this team in the national competition to provide a pathway.

"This is a great fillip for the team. They were all rapt to have a player in the national side."

Fryett, nicknamed "Pup" as the youngest member of the Roar team, replaces Australia's youngest ever international cricketer Ellyse Perry in the Shooting Stars squad to play the New Zealand emerging players in Sydney next week.

Due to Perry's dual commitments with soccer's W-League, where her team is involved in the finals series, the decision was made to withdraw her from the series of Twenty20 and 50-over matches at Blacktown Olympic Park from December 16-22.

"Being involved in the national league has really helped me, so I have a lot of confidence going into my first national representation," Fryett added.

"I've got big shoes to fill but I can only learn from the experience."

Shooting Stars squad: Erin Osborne (NSW, captain), Jessica Cameron (VIC, vice-captain), Sarah Coyte (NSW), Katelyn Fryett (TAS), Alyssa Healy (NSW), Jessica Jonassen (QLD), Delissa Kimmince (QLD), Meg Lanning (VIC), Renee Melton (VIC), Emilee Preston (ACT), Angela Reakes (NSW), Selena Tainton (QLD), Elyse Villani (VIC).