Lewis is also a member of the Nursing Council and founding member of Mamatoto Resource and Birth Centre. In 2001, she and other independent midwives formed Mamatoto, providing a supportive environment for families who wanted a more natural and individualised birthing experience such as water birth and alternative pain management.
Lewis has been a nurse for 34 years and a midwife for 26 years. She has served on many committees in the Ministry of Health and other non-governmental organizations. She is a clinical preceptor for Yale University, the University of Pennsylvania and McMaster University. She also finds time to contribute to the Midwifery Today magazine. She makes her home in Trinidad with her husband Derrick and daughter Masika.