She's a little way back (3)
I believe the answer is:
eva
'way back' is the definition.
The definition suggests a singular noun which matches the answer.
'she's a little' is the wordplay.
'she's' becomes 'evas'.
'a little' means to remove the last letter (the word is not quite complete).
'evas' with its last letter taken off is 'EVA'.
Can you help me to learn more?
(Other definitions for eva that I've seen before include "Braun or Peron, say" , "- - , nee Braun" , "-- Pern" , "Female" , "Little --, US pop singer" .)