Despite television coverage on the sports news, an appearance on a children's television show and other commitments in the past six weeks, she remains the down-to-earth girl from Palmerston who works hard at her prodigious motocross talent.
"When you're winning you're everywhere. But it's important to never get a big head, and stay level in this sport. You have to live for the moment, as you never know what's around that corner,'' Duncan said.
She will be roaring full-noise around corners at Germany's Teuschenthal motocross track today and tomorrow on her Yamaha YZ250F, with a small crew helping her out but a huge number willing her on from afar.
Her coach, former World Motocross Championship star Josh Coppins, of Motueka, will be walking the track with her ‘‘making sure everything is sweet and ready for racing'', Duncan said.
Back in the pits her mechanic, who has spent the week getting her bike ready, awaits his weekend duties.
"To be honest, my crew is small at the track but there's a lot of people in my corner that have played a big role in helping me be prepped.''
Unlike the unfamiliar sandy surface at the second round in the Netherlands in March, the Teuschenthal track is hard pack with hills.
Unlike many of her female rivals, Duncan has never raced on it or even seen it, but she remains undaunted.
"It looks wicked. It's just basic hard pack and I've ridden that my whole life, so we just prepare the same as for a normal race, really.''
Coppins has taken Duncan (20) under his wing and his knowledge of the tracks, the elite-level competition and his contacts have been a massive boost during her debut WMWC season.
Anybody thinking her success in winning the first two rounds is down to a specced-up bike, think again, because Duncan's Yamaha is "pretty much stock''.
"My suspension has been set up for me with a lighter spring rate. I run rental handlebars and have changed to a lower back sprocket and oversized front disc.''
The Yamaha standard has good power, she said.
Out of four WMWC races, Duncan has won three and placed fourth once.
She has not allowed her success so far to dull her competitive edge.
Her female rivals are fast and she is racing them predominantly on their own territory.
Her mindset lining up for the two 20 minute plus two-lap races - one each day this weekend - is to ride smooth and smart to extend her lead in the points standings.
"Obviously, to win also. I always want to win. I'll give it everything I've got.''
Duncan will stay in Europe for the upcoming French and Italian rounds, on June 5 and 26 respectively, to reduce the long-haul travel time back to New Zealand and also to gain mileage at some of the venues where she will compete later in the nine-round season.
