Aimless, wandering girl (7)
I believe the answer is:
melissa
'girl' is the definition.
'aimless wandering' is the wordplay.
'wandering' indicates anagramming the letters.
'aimless' with letters rearranged gives 'MELISSA'.
(Other definitions for melissa that I've seen before include "Girl's name meaning "bee"" , "Female" , "woman" .)