Tang Hui, from central China's Hunan province, appealed to Provincial High People's Court after losing a lawsuit against local authorities, who sent her to a labour camp for protesting her daughter's captors' sentences.
Last year, Tang petitioned for harsher punishments for those found guilty of raping her daughter and forcing her into prostitution.
She was placed in a labour camp in Yongzhou for "seriously disturbing social order and exerting a negative impact on society" by protesting in front of local government buildings in August last year.
On January 22, Tang filed a lawsuit at the Intermediate People's Court in Yongzhou in which she asked for 2,463.85 yuan (USD 400) in compensation.
Her case was heard on January 28, with courtroom proceedings lasting one day. On April 12, the court ruled that Tang was not entitled to the compensation she requested, state-run news agency Xinhua reported.
