Girl appeal (3)
I believe the answer is:
sue
This clue is a double definition.
'girl' is the first definition.
(girl's name)
'appeal' is the second definition.
(I've seen this in another clue)
(Other definitions for sue that I've seen before include "- - Barker, 19 star" , "Institute legal proceedings (against someone)" , "take to 10 [COURT] !" , "Prosecute at law" , "Charge" .)