Dionne holds a degree in Internal Auditing and obtained a Bachelor of Laws (LLB) degree from the University of South Africa. She was called to the Bar and joined the Johannesburg Society of Advocates in 2023. Prior to joining the Bar, she developed proficiency in finance and internal auditing during her tenure in the local government sector. Dionne has a general practice with a particular interest in Tax Law, Administrative Law, Maritime and Shipping Law, Intellectual Property Law, and Labour Law.