Mary has a legal background, having studied law at the University of Nairobi and a postgraduate diploma in law at the Kenya School of Law. She is an Advocate of the High Court of Kenya and has previously worked at Mukiri Global Advocates LLP and Marangu Kania Advocates among others. She also holds a Diploma in Human Resource Management from the University of Nairobi and is currently pursuing her Masters Degree in Law at the East London University.