[1][2] While studying at UCD and living at Dominican Hall, Dublin, Beaumont became active in the Irish nationalist movement.
[1] Beaumont used her first aid training later, when helping Dr Kathleen Lynn treat those affected by the 1918 flu epidemic in Dublin.
She joined the executive of Cumann na mBan in 1920, and worked as their organiser in the County Louth and Armagh area from 1920 to 1921.
[1] Beaumont was among the founding staff of Louise Gavan Duffy's Scoil Bhríde in 1917, and continued to work there after her marriage.
She was the vice-chair for the ICA's sub-committee on "residential courses" which was founded in January 1953, and in this capacity she took part in talks with the Kellogg Foundation to secure funding for the project.
During the committee meeting at Termonfeckin, County Louth, Beaumont chaired the session which chose the ultimate location of the college, An Grianán with the building being purchased with funds from the Kellogg Foundation.