Raised in the Victorian country town of Nihil, Stephan's senior rowing was from the Melbourne University Boat Club. Stephan was first selected to represent Victoria in the women's youth eight in 2011 contesting the Bicentennial Cup at the Interstate Regatta within the Australian Rowing Championships. From 2012 to 2018 she rowed in Victoria's seven consecutive successful senior women's eights who won the Queen's Cup at the Interstate Regatta within the Australian Rowing Championships. She stroked those Victorian eights to victory in 2013, 2014, 2017 and 2018
International representative rowing
Stephan was first selected for Australian representation in a coxless four contesting the 2012 U23 World Rowing Championships in Trakai, Lithuania. Stephan stroked the four to a silver medal. The following year at the 2013 U23 World Championships in Linz, Stephan again stroked the Australian coxless four. With Charlotte Sutherland, Alexandra Hagan and Hannah Vermeersch, Stephan won gold and an U23 World Championship title. Two months later that same four raced as Australia's senior women's coxless four at the 2013 World Rowing Championships in Chungju, Korea and took a bronze medal. All members of the four also doubled-up in the senior women's eight with Stephan at stroke and they placed fifth in that event in Chungju. In 2014 Stephan rowed in a coxless pair with Charlotte Sutherland. They raced at the World Rowing Cup I in Sydney and then at WRC III in Lucerne before taking the pair to the 2014 World Rowing Championships in Amsterdam where they placed fifth. Stephan secured a seat in the Australian senior women's eight in 2015 and raced at two Rowing World Cups in Europe and then in the bow seat of the eight at the 2015 World Rowing Championships in Aiguebelette who failed to make the A final and finished in overall eight place. Stephan was a member of the Australian women's eight who initially missed qualification for the 2016 Rio Olympics but received a late call up following the Russian drug scandal. WADA had discovered Russian state sponsored drug testing violations and the IOC acted to protect clean athletes and set strict entry guidelines for Russian athletes resulting in most of their rowers and nearly all of their crews being withdrawn from the Olympic regatta. The crew had dispersed two months earlier after their failure to qualify but reconvened, travelled at the last minute to Rio and borrowed a shell. They finished last in their heat, last in the repechage and were eliminated. After the Olympics Stephan continued to compete at the highest level and in 2017 she was selected at bow in Australia's coxless four with Molly Goodman, Katrina Werry, and Sarah Hawe. They competed at the World Rowing Cups II & III and as a crew, they didn't lose a race in the international season. At the 2017 World Rowing Championships in Sarasota, Florida it was to be no different. They won their heat and started slow in the final, sitting in sixth place through the 500m and at fifth place at the 1000m mark. At the 1500m mark, they began to push on the Dutch and were joined by Poland & Russia, all challenging for the podium. In the final sprint, Stephan called Goodman to up the rating and at 43 strokes per minute, the Australian four surged to the lead to claim gold and the world championship title ahead of Poland & Russia. With Katrina Werry changed out for Rosemary Popa the world champion four stayed together into 2018 and started their 2018 international campaign with a gold medal win at the World Rowing Cup II in Linz, Austria. In their second competitive outing of the 2018 international season in an Australian selection eight and racing as the Georgina Hope Rinehart National Training Centre, after Rowing Australia patron, Gina Rinehart, Stephan won the 2018 Remenham Challenge Cup at the Henley Royal Regatta. The following week back in the coxless four, Stephan won another gold at the World Rowing Cup III in Lucerne. By the time of 2018 World Rowing Championships Popa was out of the four with a rib injury and Kat Werry back in. Seated as they had been in 2017, the Australian four won their heat, were surprised by a new combination USA crew in the semi and then in the final placed second to the USA and finished with world championship silver. In 2019 Stephan was again picked in Australian women's sweep squad for the international season. In an effort to qualify the women's eight for the 2020 Olympics, selectors made some changes between the coxless four and the eight. Molly Goodman moved into the eight and Stephan was selected to stroke the Australian women's coxless four, leading them to a bronze medal at RWC II in Poznan and to a gold medal at WRC III in Rotterdam.Stephan, Aldersey, Werry and Hawe were selected to race Australia's coxless four at the 2019 World Rowing Championships in Linz, Austria. The four were looking for a top eight finish at the 2019 World Championships to qualify for the Tokyo Olympics. They won their heat and semi-final, thereby qualifying the boat for Tokyo 2020. They led the final from start to finish, took the gold medal and regained their world champion title.
