Relatives of a seven-year-old girl murdered in Mexico said on Monday the government had failed to protect her despite their pleas, while President Andres Manuel Lopez Obrador appeared to blame the crime on neo-liberal economics. Fatima Cecilia Aldrighett went missing on Feb. 11. Her body was discovered over the weekend in a plastic garbage bag in Mexico City’s Tlahuac neighborhood, days after another murder of a young woman triggered angry protests.Sonia Lopez, Aldrighett’s aunt, said the girl could have been found alive if authorities had listened to the family.“Fatima is not with us because the protocols were not followed, because the institutions did not give the attention they should have,” Lopez said, her voice breaking with emotion as she spoke to reporters. “We will not forget her.” Lopez said precious hours were wasted after Aldrighett was reported missing. She also said social services had not heeded calls to help the girl’s mother, who has health problems, support her daughter.Mexico City’s attorney general and mayor promised justice and offered a $107,000 reward for information. The attorney general, Ernestina Godoy Ramos, said she would review the office’s handling of the case. “The full institution has been activated for the investigation,” she told reporters.Asked about the girl’s death, Lopez Obrador said he was sure authorities would catch the perpetrators, but said punishment alone was not the solution.The bigger challenge, he said, was to purify Mexican society, which he said had “fallen into decline, a progressive degradation that has to do with the neo-liberal model.”Lopez Obrador regularly blames problems such as corruption, poverty and violence on policies implemented during the era of pro-market policies such as economic liberalization starting in the 1980s.Family members and parents protested on Monday outside Aldrighett’s home and her school, where she was seen leaving accompanied by an adult woman last week. #JuticiaParaFatima, or Justice for Fatima, was tweeted 179,000 times and her name was a top global trend.Footage on Twitter showed residents of the girl’s neighborhood pushing and shouting as they held signs demanding justice.The girl’s grandfather, Guillermo Anton Godinez, standing outside the family’s modest home, said Lopez Obrador could not blame only his predecessors for Mexico’s problems.“Now he is in charge, he is president… He should show us he is different.”Social media users noted other countries with free-market economies do not suffer the levels of gender violence seen in Mexico.