She entered the teaching school of the University of Chile in 1924, and finished her studies there in 1928, earning the title of professor of mathematics and physics with a thesis on differential equations and their application in pedagogy and engineering.
She became a high school mathematics teacher at the Liceo José Victorino Lastarria (Santiago), and continued to teach there for the next 30 years.
[1] She was named a professor in Chile's school for industrial engineers in 1947, which in 1953 merged into the Universidad Técnica del Estado [es] (UTE).
[5] In 1971, Antoine coauthored the book Nuevas Matematicas Para Los Padres [New Mathematics for Parents], with María Lara.
[1][4] Antoine was honored by the Agrupación de Mujeres Ingenieros in 1997, as part of their celebration of International Women's Day.