Following her call to the Bar in the Gold Coast, Forster was called to the Gambian Bar, then worked in
Gambia as a lawyer from 1947 to 1951. She worked in this office for about six months. From 1957 to 1982 she was the legal counsel for
Mobil Oil Ghana Limited. Aside from legal practice, Forster engaged in other public and professional activities. She was a member of a number of committees and organizations, some of which she helped to establish. She was a founding member of the
Ghana International School Committee, and served on the committee from 1954 to 1959. She also served on the Accra Magisterial District Prohibition Committee as a member, around the aforementioned period. She helped found the
Accra branch of the
Inner Wheel Club, and the
International Federation of Women Lawyers (FIDA) in Ghana, serving as the association's president. == Personal life and death ==