Marshall was born on 4 November 1920 in
Stoke-on-Trent,
Staffordshire, England. She was educated at
St Dominic's High School for Girls, an all-girls
private school in Stoke-on-Trent. In 1941, Marshall joined the
Women's Auxiliary Air Force (WAAF). With the creation of the
Women's Royal Air Force (WRAF) in 1949, she was transferred to the WRAF as a flight officer (equivalent to
flight lieutenant) on 1 February 1949 with seniority in that rank from 10 December 1946. She was promoted to squadron officer (equivalent to
squadron leader) on 1 July 1953, to wing officer (equivalent to
wing commander) on 1 January 1964, and to group officer (equivalent to
group captain) on 1 July 1966. From 1968 to 1969, she served as commanding admin officer at
RAF Strike Command. She stepped down as director in July 1973 to be succeeded by
Molly Allott, and retired on 1 September 1973. Marshall died on 4 February 2005, aged 84. ==Honours==