"It is pretty cool competing at AIMS because you get to see where the others are at, as most of the people I have competed against are people who I have seen before at other competitions. It is cool to see what school they go to because I represent Bay of Plenty at the nationals."
Artistic gymnastics is the version of the sport that is a consistently high ratings winner at events like the Olympics. It involves competing in numerous strength and agility exercises.
Millie has a special favourite that is her signature event.
"I love the floor exercise because I am a dancer so it helps to be able to move and tumble.
"I just recently gave up ballet for gymnastics because I want to get seriously into gym. The ballet and dance helps a lot with my routines.
"But it can be scary at times, especially the beam which is not my favourite.
"The key to dealing with fear is you just have to get over it.
"You have to think of the positives and think about what happens when you get it, because the more you nail it the less you will be scared."
American Aly Raisman is the gymnast Millie most aspires to be like, because of her courage and what she has been through. If Millie continues to improve at the rate she has been, then perhaps one day she too may compete at the Olympics.
Pam Walters, Millie's coach for three years, says the performance side of her is a special quality.
"Millie is really good at pulling it off on the day and performing to a high standard when needed," Walters said. "With her dance background she is very committed, dedicated and is a very hard worker, which is all you want as a coach.
"She is also a good all-rounder but really shines on the floor, where her dance comes through and she can show it off.
"We are hoping for another top placing for her at the nationals."