Carmen was born in Dumbartonshire, Scotland, in around 1899, the daughter of Robert and Agnes Buchanan. By 1901, they were living at 35 Thornhill Road, Handsworth, Staffordshire, along with Carmen’s sisters Mary Madelene and Maggie. Carmen, Margaret and her parents were living at the same address in 1911. Carmen had become a University student, studying Science.
Carmen served as a Special Police Woman for Wolverhampton Council during the First World War., although she was still living in Handsworth by 1939, so it is unclear whether she ever moved to Wolverhampton.
She married Thomas H. Gameson in West Bromwich in 1924, and they had two children – Arthur R. B. and Margaret C. B. – in West Bromwich in 1924 and 1928. Carmen died in Birmingham on 14 September 1959 at the age of 70, leaving effects to the value of £431 1s. 8d.