Born in Cornwall, the artist exhibited in the Porthmeor Gallery's opening show in 1928. She initially lived at Dunvegan, Carbis Bay - the home of her parents and sister Iris COOKE. Norman COOKE, her father, was a stalwart of STIAC until 1940 (Tovey), and both of his daughters were artists with a studio in their home.
After her marriage in 1932, Dossie moved to Nancledra with her husband. Working mainly in 'black and white', her focus was on landscapes and still life. She exhibited with STISA in Brighton (1932), Birmingham & Cheltenham (1936) and also in the South African Tour of 1947.