Ahmadiyya Senior High School from 1968 to 1975, earning both her Ordinary and Advanced Level certificates.
[3] Owusu began her legal career as a National Service person at the Attorney General's Office in Kumasi from 1980 to 1982.
She later worked in private practice with Messrs Totoe Legal Services in Kumasi from 1984 to 1990.
[2] Owusu was appointed the President of the International Association of Women Judges (Ghana Chapter) in 2014, and she served in this position until 2016.
[3] She was part of a seven-member panel that did the hearing of the 2020 election petition by John Mahama against The Electoral Commission of Ghana and Nana Akufo-Addo.