The Form Four student from St Paul's Convent School (Secondary Section) won four out of five round-robin group matches, and was only defeated by China's Mai Yonglan.
Debbie - a bonze medallist at the Asian Cadet and Junior Championships 2013 - was sure about what she wanted to achieve even before the Games. At the time, she said she wanted to enter the semi-finals, which meant winning at least a silver medal.
Debbie had a bye in the round of 32. She beat Vietnam's Thi Thuy Trinh Tran in the round of 16 and then ousted Thailand's Korawan Thanee in the quarter-finals.
In the semi-finals, she scored a 15-10 victory over Taiwan's Cheng Ya-fang, taking her to the final against China's Zhong Peiying.
After the first two three-minute periods, Debbie and Peiying were tied 11-11, so an extra one-minute period was added. Peiying played aggressively and, in the end, won 15-13 to claim top honours.
But Debbie was still happy with her silver medal.
"I didn't expect to have a tight match. Despite the defeat, I really enjoyed the match," she said.
Debbie said the performance of her teammate, foil fencer Joey Lau Cheuk-yu, a day earlier had motivated her to do well.
"Joey won a bronze medal. This proved that our team is up in front, and I wanted to become a medallist, too, and share Joey's happiness," Debbie said.
Her coach, Jiang Haitao, said he is happy with Debbie's performance.
"The Taiwan fencer eliminated the second-seeded Singaporean Lim Donna Li in the quarter-finals. But Debbie didn't give her a chance, and proved herself to be the better player in the semi-finals," said Jiang.
"She did well in the final, too. I would have been satisfied if she delivered 70 per cent of what she learned in training when under pressure in a match. In the final, she gave perhaps even more than that."
"The only regret was that she wasn't able to deliver what we planned for the additional minute of the competition. She missed an opportunity; but I am still very happy with her performance."