A legal practitioner who hails from Anambra State and was called to the Nigerian Bar in 2012, she is an active member of the Nigerian Bar Association and has served the Bar in several capacities, including being a member of the Rule of Law and Human Rights Committee, immediate past Branch Treasurer, Vice Chairman, and Chairman of the Human Rights Committee.

She is also an active member of the Nigerian Bar Association Section on Public Interest and Development Law (NBA-SPIDEL), and the International Federation of Women Lawyers (FIDA). Tosan is a human rights activist known for her struggles for the emancipation of mankind; in seeking the freedom of the oppressed, intimidated, and neglected in society.

She is a writer who has written articles about human rights, and the ills and challenges of the office of Vice Chairmen and statutory Chairmen of the human rights committee, such as the recent article “MR CHAIRMAN, let us breathe!”