Born in Hong Kong and graduated from the Northcote College of Education, Ng joined the Cultural Services of the former Urban Services Department in 1978 (Now LCSD) as an Assistant Manager and retired as Chief Manager in 1995. During her employment, she had received commendations for three times for her excellent performance. She also received the 30 Years’ Meritorious Service Award in 1993. Ng has worked for the Hong Kong Arts Festival in 1995 and the Hong Kong Arts Development Council in 1996 before joining the Hong Kong Ballet as General Manager in 1997, she was promoted to Chief Executive Officer in 1999. In 2007, Ng retired from the Hong Kong Ballet and received the Distinguished Achievement Award by the Hong Kong Dance Alliance and Medal of Honour (M.H.) by the HKSAR Government respectively for her valuable contribution to the arts administration field and her achievements in the Hong Kong Ballet over the years. She joined the Robert H.N. Ho Family Foundation in 2008 as Chief Executive Officer and later became the Foundation’s Consultant from 2010 to 2015.
Ng is now still active in the arts and culture field as Chair Emeritus of the Hong Kong Dance Alliance; member of Hong Kong Dance Company Board; Pants Production Board and JCCAC Management Committee. Ng is also assessor of the Hong Kong Arts Development Council.