"We had to do a lot of fatigue sessions and then play afterwards," she said. "I wasn't feeling overly confident, it's hard to tell during trials how you are going, the standard was so high."
Sinclair, the only player returning from the 2011 side, is excited about travelling to Adelaide next month.
"It will be a really cool experience getting away with the team - last year we just went to Wellington so it will be great to get on a plane and play overseas," she said.
The 16-year-old is a member of New Zealand Netball's Emerging Talent Accelerant Group - a group of players identified as having the potential to progress to the national under 21 side.
She will take part in the New Zealand under 21 trials in July, something she is treating as a learning experience.
"I will probably be the youngest one there, but it will be a good experience just to play at that level."
Secondary Schools coach Helene Wilson is excited about the young talent in the side.
"We have a young team, with a number of new faces, which is full of variety and will bring the dynamic skills needed to be competitive in the tournament.
"These girls are determined and hard-working, I think they will represent their country with pride."
The team includes two players with prominent sporting heritage, All Black Isaia Toeava's sister Elisapeta and former league star Steve Price's daughter Jamie Lee.
