In 1938, her address was listed as 13 Greville Place, London NW6.She studied at Regent Street Polytechnic in the 1930s and exhibited at the Royal Academy, the Royal Glasgow Institute of the Fine Arts and the Royal Scottish Academy, all before the age of 24.She married the landscape artist William Heaton Cooper (1903–1995) in 1940.
They lived in Grasmere in the English Lake District, and had two daughters and two sons, one of them being the painter Julian Cooper.
Both Bell and her husband were followers of the teachings of the Christian Moral Re-Armament movement.
The couple held a joint exhibition at the Fine Art Society's London gallery in 1955.
Her auction record is £120, set at Anderson & Garland's auction house in Newcastle-upon-Tyne on 14 July 2015, for her a composition sculpture of a mountaineer.Bell died in Grasmere in 1975 and is buried in the village cemetery.