From 2009 to 2011, she undertook postgraduate studies abroad, receiving an Erasmus Mundus scholarship to attend the universities of Copenhagen, Granada, and Rennes, where she completed a double master's in public health.

[5] As with numerous prominent leftist academics around this time, Pérez's career at the turn of the twentieth century shifted its emphasis away from class struggle and toward the full realization of women's and ethnic rights.

[3] From 1996 to 1998, she served as director of gender in the municipal governments of Cochabamba and Santa Cruz de la Sierra, was a consultant for various indigenous organizations, and held positions at multiple NGOs, including the Permanent Assembly of Human Rights and the Center for Legal Studies and Social Research.

[3] In addition to ordinary parliamentary work, Pérez spent much of her tenure serving as a member of the mixed special commission that investigated the privatization and capitalization process that occurred between 1990 and 2001, a post in line with her opposition to the neoliberal economic practices of the day.

[11] Nearing the conclusion of her term in 2019, Pérez was designated to serve as ambassador to Iran,[12] a country with which Bolivia under Evo Morales strengthened bilateral relations due to shared political positions, especially regarding the United States's "meddling" in international affairs.

[14] Within days of its assumption, the conservative transitional government that succeeded Morales terminated eighty percent of his administration's ambassadorial staff,[15] and in mid-2020, it closed the country's embassy in Iran, ostensibly as a cost-saving measure.

[17] Pérez's second term as head of the Bolivian legation in Tehran coincided with a series of women's rights demonstrations that wracked the West Asian country following the violent death of Mahsa Amini in late 2022.