[2] She was vocal in her opposition to English colonial policy in South Africa during the Boer Wars and supported Roger Casement's Congo Reform movement.

[2] Her 1908 book The Making of Ireland and its Undoing argued for the sophistication and richness of the native Irish civilisation.

[3] Stopford Green was active in efforts to make the prospect of Home Rule more palatable to Ulster Unionists.

[5] She was closely involved in the Howth gun-running of July 1914, having extended Casement a loan to help buy the German arms.

[2][7] She supported the pro-Treaty side in the Irish Civil War and was among the first nominees to the newly formed Seanad Éireann in 1922, where she served as an independent member until her death in 1929.