Domestic aide Xu Qin, who helped a woman in her 80s after she fell down in the street in Hongkou District, Shanghai, on Friday, has been accused by the woman's family of hitting the senior.
The family is demanding Xu pay them 80,000 yuan (US$12,903) in compensation.
Xu's husband, surnamed Jiang, has been every day at the intersection of Xinshi Road S. and Chezhan Road S., where the accident happened, ever since, searching for witnesses.
"It is the only way to prove Xu's innocence," Jiang said. No legal action has been filed.
Jiang said a man surnamed Deng has contacted him, saying he was walking by the scene on Friday. Although he didn't witness the accident, Deng said he heard from others that Xu didn't hit the senior, the Shanghai Evening Post reported. Jiang said he would keep waiting until more witnesses were found.
The accident happened at 7:15pm Friday night. Xu said she saw the elderly woman lying in the street while she was riding past on a moped. "I helped her to get to the roadside without hesitation as she was in a dangerous situation," Xu said.
There were more than 10 people gathered, but no one helped the woman, Xu recalled.
The daughter of the woman insisted Xu's moped knocked the woman down, and the woman said she didn't see the face of the person who hit her.
The woman was diagnosed with a fracture and the medical bill reached 80,000 yuan.
Jiang works at a car repair shop and he said the family couldn't afford to pay 80,000 yuan.
Investigations are still underway, Hongkou police said.
There is a lot of coverage in China about good Samaritans sued by people they helped.
A woman in east China's Shandong Province who aided a man after he fell down in September succeeded in proving her innocence by raising media attention and finding witnesses. A witness finally came forward and confirmed that she had not caused the accident.
Such incidents have stirred heated discussion over whether members of the public should come to the aid of those in distress.
In October, at a market in Foshan in south China's Guangdong Province, a toddler was first struck by a van, then run over by another vehicle. A surveillance camera showed that over seven minutes, 18 people walked by the dying child and made no effort to help.