Llewellyn is the founder and chair of WaterAble – a network for people with disability and their allies in the Victorian water industry.  An experienced company director, Llewellyn is a fellow of the Australian Institute of Company Directors  and has been a member of the Western Water board since 2015. She is also a director of the Victorian Eye and Ear Hospital and the Public Transport Ombudsman. Llewellyn has a background in law and public policy and she is currently an associate of the Nous Group. In 2014 Llewellyn lost most of her vision to an hereditary eye condition.