She spent her primary school and junior secondary school years in Lagos under the care of her guardian, Mrs Gbemisola Rosiji, wife of Ayo Rosiji and Bishop and Mrs S.C. Philips.
After completing secondary school education, she got employment with the Nigerian Broadcasting Corporation at Ikoyi, Lagos in 1955.
Abgaje-Williams' career as a newsreader began as a result of co-worker not showing up to work.
On that day, a colleague who usually does announcements or reading small bits of information on the radio did not show up, the current host then asked her to take his place.
Agbaje-Williams read the information and when the supervisor heard her voice, he was impressed, she was then asked to join the programmes department as a staff announcer.