Expelled from Honduras for leading demonstrations against the government in 1944, she fled home to El Salvador but remained only a few months because a coup d'etat brought in a dictatorship.

Relocating to Guatemala, García continued with her activities organizing labor and educating working-class people, until she was expelled by the president in 1946.

[2] In the early 1920s, her brother, Armando, who had been a socialist labor organizer in the United States joined the family in Honduras and introduced García to the ideas of socialism.

[3] By 1921, García, her brother Armando, Víctor M. Angulo, Manuel Cálix Herrera, and Carlos Gómez were recruited by Juan Pablo Wainwright as Marxist labor organizers.

[11] They supported Cálix in a bid for the presidency,[8] but when the dictator, Tiburcio Carías Andino won the 1932 election, he outlawed the communist party.

[8][11] She joined the National Union of Workers (Spanish: Unión Nacional de Trabajadores (UNT)), which was affiliated with the illegal Communist Party of El Salvador[8][12] and continued her organizing efforts.

Joining Women Committee, she participated in the presidential campaign for Arturo Romero, who was one of the candidates to replace the temporary president Andrés Ignacio Menéndez.

[8] In Guatemala, García organized the Salvadoran Liberation Committee to support exiles from El Salvador and rebels fighting against Aguirre.

Her son, Tómas, though a third-year medical student, joined the resistance and was killed in a battle in December 1944 when a group of militants overtook Ahuachapán in an attempt to overthrow the Aguirre regime.

Opposition to trade unions by conservative factors in the society led to García's expulsion by Guatemalan president Juan José Arévalo in February 1946.