Reanna Solomon, a mother of five, died aged 40 on July 3.
Despite nearly half of Nauru's population testing positive in early July, hers is the only death from the virus.
She won gold in the women’s over-75 kilograms super-heavyweights at Manchester 2002 and competed at the Olympic Games in 2004, finishing 11th.
"It was so sad," said Maximina Uepa, 19, after finishing third in the women's 76kg today.
"I would like to dedicate my medal to her memory."