[1][2] Boiteux graduated with a bachelor's degree in law from Rio de Janeiro State University (UERJ).

[2] She graduated with a master's degree in municipal law at UERJ, with her dissertation being The reverted panopticon: a history of prison and the vision of the imprisoned in Brazil.

She furthered her studies and graduated with a doctorate in criminal law from the University of São Paulo with the thesis Penal control over ilicit drugs: the impact of prohibitionism on the justice system and society.

[2][3] In her capacity as a lawyer, she assisted PSOL with bringing arguments to the Supreme Federal Court (STF) that intended to decriminalize abortion in Brazil up to the 10th week of gestation.

[8] She assumed the mandate of councilwoman on 1 February 2023 after then-councilman and fellow PSOL member Tarcísio Motta resigned to become a federal deputy.