Her debut would have come in 2016, but she busted her shoulder in the Auckland Storm's Farah Palmer Cup semifinal against Canterbury. The result was the Portia Woodman centre experiment with the Black Ferns on their season-ending programme of five tests.
But Fitzpatrick won the call-up in 2017 after a season with the Black Ferns Sevens, for whom she played until the final tournament in June.
She started the Australia international in June at second five.
"Twelve is an exciting position. You get to touch the ball a bit more and you have more of a playmaker role, whereas 13 is more of a strike player. There's lots more talk at 12. You are the connection between the forwards and the backs, as the 10 is just trying to get the ball out."
It will be interesting to where Fitzpatrick is used, but that may depend on how much game time Kelly Brazier gets in the No 12 jersey. If that were to occur, you might see Fitzpatrick or Stacey Waaka suit up at centre.
Fitzpatrick is not counting her chickens in any way, shape or form.
"The whole team has agreed. It's a one-game at a time mentality. We all know, from the last World Cup, that you want to win every single game to have the best possible chance of getting into the finals.
"It's getting real now. We're doing all we can, and there's a really good vibe."
*The Black Ferns kick off their WRWC campaign against Pool A opponents Wales next Thursday at 1.45am (NZT).