Saves an agitated girl (7)
I believe the answer is:
vanessa
'girl' is the definition.
'saves an agitated' is the wordplay.
'agitated' indicates an anagram.
'saves'+'an'='savesan'
'savesan' is an anagram of 'VANESSA'.
(Other definitions for vanessa that I've seen before include "Girl's name; red admiral, painted lady genus" , "Girl's name - butterfly genus" , "Red admiral butterfly" .)