The 16-year-old endured a wait of two "nerve-racking" months before learning she had qualified for the Nanjing 2014 Youth Olympic Games.
She finally heard the news she was hoping for while out on a shopping trip with her mum.
“We were out getting food," she explained. “I got a call and I couldn't really listen properly because I was so excited, so I had to give the phone to my mum. I was dancing around in the market."
Clark’s jump of 13.06 metres, which was second only to Yanis Esmeralda David (FRA) and her result of 13.33m, was a personal best. Eszter Bajnok (HUN) took the bronze with a jump of 13.01.
“I'm very happy,” she said. “The stadium, the environment… everything is so loud and exciting. It gets you going in here.”
Clark of Australia seals the silver medal in the women's triple jump
With a number of Clark's team-mates also scoring medal success, including Jessica Thornton (AUS), who won the women's 400m, and Sam Geddes, who nabbed women's 100m bronze, a party mood is taking hold in the Australia camp.
“I'm eating ice cream to celebrate,” revealed Clark. “Everyone's doing it when they win. It's a trend. I'm going for a latte frappe and a chocolate ice cream. It's going to be really nice. I've been on a sugarless diet for three months, so I've been holding off for a long time!”
In the session’s other gold medal events, Kokeb Tesfaye Alemu (ETH) won the women's 1,500m with a time of 4:15.38 minutes, while Xu Zhihang (CHN) took the men's 400m hurdle gold in the closest result of the track and field schedule.
After a nervous wait on the finishing line, first place was eventually decided on a photo finish after both Xu and Mohamed Fares Jlassi (TUN) recorded a time of 50.61 seconds.