A thirteen-year old Brazilian girl claims she has faced death threats through a Facebook community page she created to denounce problems in her school.

Isadora Faber created Diário de Classe (or “Classroom Diary”) in July 2012 to “show the truth about public schools,” as she writes on the page description, leading her to become an internet celebrity and a teen champion of free speech through new media.

Isadora filled the page with updates on life at Maria Tomázia Coelho School in Florianópolis — capital of the southern state of Santa Catarina — addressing problems in the school including exposed wires, damaged doors, transparency issues and improper teaching practice.

On 17 February, Isadora alerted her 581,000 subscribers to a message published on Diário de Classe’s wall that demanded the fan page be deleted, or Isadora and her classmate Lucas Alves — who also posts content on the website — would end up “with a bullet right on their foreheads”. The children’s parents were also threatened .

The apparent death threat was posted under the profile of teenager Bruna Meneises Silva, which is believed to be a fake one and has been deleted since. Police authorities asked Facebook to provide Bruna’s IP address, so they could trace the person who posted the message.

Isadora’s mother Mel Faber told Index her daughter would never feel intimidated by the threats. “Isadora responds the opposite way. When she’s threatened, she gets more compelled to go public and face her attackers. But I can’t say if that happens because she’s so young and incapable of measuring risks.”

Last November, the student posted a picture of her injured grandmother after her house was allegedly stoned, possibly in retaliation to the Facebook page.

On 22 February, Isadora was ranked by Financial Times in a list of 25 outstanding Brazilians in areas including politics, social work, business, sports, arts and entertainment.