Sally's first attempt (5)
I believe the answer is:
foray
I believe this clue is a double definition.
'sally's' is the first definition.
(I've seen this in another clue)
'first attempt' is the second definition.
(I've seen this in another clue)
(Other definitions for foray that I've seen before include "Sortie" , "Raid for plunder" , "Brief incursion" , "Sudden short attack" , "Raid or incursion" .)