Teresita joined UNESCO at its headquarters in 1995 in Paris. In 2003 she was deployed to the UNESCO office in Ramallah. In 2005 she joined the UNESCO office in San Jose, Costa Rica, where she was in charge of several national projects on youth development and prevention of violence (notably in El Salvador, Honduras, Nicaragua and Dominican Republic). She also supervised research projects regarding the fight against poverty and the promotion of human rights (the right to education, the rights of migrants, the rights of women, etc.). Teresita left UNESCO in 2014 and returned to Mexico, where she carried out several courses on human rights, security and prevention of violence. She has carried out four consultancies with the U.N. Economic Commission for Latin America and the Caribbean (ECLAC), notably on issues of human rights and prevention of youth violence in Central America. She is a Mexican national who did her undergraduate studies in Canada on international development and political science, and her Ph.D. in Mexico in sociology, at El Colegio de Mexico. She is currently taking an online Master's degree on studies and prevention of gender-based violence at the University of Salamanca, Spain, whilst carrying out a consultancy with ECLAC regarding social public policies. Teresita is a Fellow of Salzburg Global Seminar.