During the 1900s, Eyle began actively associating with various feminist organizations. In 1901, she helped to establish the Consejo Argentino de Mujeres. She also presided over the German Woman's Home from 1901 to 1903 and helped to create the Argentine Asociación Universitarias Argentinas, which advocated for various reforms before the
National Congress of Argentina. Reforms introduced by the Asociación addressed a variety of issues, including maternity protection, social security, and teachers' retirement. The Asociación also organized the
Primer Congreso Femenino Internacional ( 'First International Women's Conference') in Buenos Aires in 1910, on the centennial anniversary of the
May Revolution, with Eyle serving as chair of the conference's organizing committee. Eyle participated in several conferences centered on children's rights and welfare during the 1910s. The first took place in Buenos Aires in 1913. Topics discussed included the role of men and women in childcare and education, legal reforms to prevent juvenile delinquency, and hygiene reforms to reduce infant mortality and address children's behavioral issues. The second was the
Primer Congreso Americano del Niño ( 'First American Congress on the Child') in Buenos Aires in 1916, where proposals for child labor regulations and menstrual leave were discussed. As of 1918, Eyle was a part of the
Unión Feminista Nacional ( 'National Feminist Union') founded by Alicia Moreau de Justo, an organization founded to unite different segments of the Argentine feminist movement. Eyle served as the first editor of the organization's periodical,
Nuestra Causa, which ran from 1919-1921. Explaining the periodical's purpose, Eyle wrote that: During Eyle's tenure, the periodical published numerous articles in opposition to the "
white slave trade," a term used to refer to the trafficking and sexual enslavement of white women. Conversely, according to gender researcher María Soledad De León Lascano, coverage of the topic declined after Eyle left her editorial position. ==Death and legacy==