The French female in green managed to dilate (7)
I believe the answer is:
enlarge
'to dilate' is the definition.
(I've seen this in another clue)
'the french female in green managed' is the wordplay.
'the french female' becomes 'la' (feminine version of 'the' in French).
'in' is an insertion indicator.
'managed' is an anagram indicator.
'green' is an anagram of 'enrge'.
'la' inserted into 'enrge' is 'ENLARGE'.
(Other definitions for enlarge that I've seen before include "Expatiate" , "Amplify" , "Make bigger, say photo" , "Grow" , "swell?" .)