Maitland's Maddi Elliott claimed silver in the 100m backstroke on Wednesday morning.
Elliott finished second behind Great Britain’s world record holder Stephanie Millward.
Australia’s Lakeisha Patterson was fourth pipped at the touch by America’s Jessica Long.
Elliott won gold in the her pet event the 100m freestyle on Monday morning and will have another shot at gold in Saturday morning’s 50 metre freestyle final.
She set the world record time of 30.13 seconds in the 50m in 2015.
Elliott, 17, held onto her title as best in the S8 category 100m and dedicated the win to her late friend Jade Frith.
“I really want to dedicate this to my friend Jade. She’s been my best friend for so long and since I lost her a couple of months ago I’m going to dedicate this medal to you,” she told a Channel Seven reporter after the race.
Jade, a 15-year-old swimming champion from the Central Coast, died in hospital in April after she was hit by a car. At the time Maddi called on the tight-knit swimming community to post photographs “in honour of a lovely girl” and a cascade of tributes quickly followed.