Lady from Esher (3)
I believe the answer is:
she
'lady' is the definition.
('she' refers to a woman)
'from esher' is the wordplay.
'from' indicates the answer is hidden within the clue.
'SHE' can be found hidden inside 'esher'.
(Other definitions for she that I've seen before include "lady" , "Female person" , "way to refer to mare" , "The one who must be obeyed" , "fiction" .)