 Miss Molteno had become close friends with Emily Hobhouse and Olive Schreiner and worked with them on humanitarian and anti-war causes both during and after the Boer War.With them, she passionately campaigned for the victims – especially the children – of the British concentration camps and the pillaging of the Boer farms.In Port Elizabeth she also made the acquaintance of Alice Greene (aunt of the writer Graham Greene), who was her employee as the vice-principal of the Collegiate School and was also involved in anti-war activism.