She was the daughter of Loftus Sidney Lambert, clerk for an electrical supply company, and later estate agent, and his wife, Mildred Emma, née Barker.
[2] She confirmed the theory of Clifford Smith that the Norfolk Broads were of man-made origin, the result of extensive peat-digging, and not a natural formation as the geomorphologist Joseph Newell Jennings had recently concluded.
At Southampton, Lambert made a pioneering contribution to the use of computers in botanical science in her collaboration with her head of department, Bill Williams, on the multivariate analysis of plant communities.
[2] The Norfolk Record Office holds a large collection of Dr Lambert's papers from the 1920s-2005, which includes drawings, maps, photographs and written works.
In the final three years of her life she moved to a nursing home, Oakwood House, Old Watton Road, Colney, Norfolk.