Girl showing caution (8)
I believe the answer is:
prudence
I believe this clue is a double definition.
'girl' is the first definition.
'showing caution' is the second definition.
(I've seen this before)
(Other definitions for prudence that I've seen before include "Caution or shrewdness" , "Caution, circumspection" , "Quality of being cautious and sensible, and a girl's name" , "good management" , "The girl for wisdom and forethought" .)