Law officer asks her if felon's hiding (7)
I believe the answer is:
sheriff
'law officer' is the definition.
(I know that sheriff is a type of law officer)
'asks her if felon's hiding' is the wordplay.
'hiding' says the answer is hidden in the clue.
'SHERIFF' is hidden within 'asks her if felons'.
(Other definitions for sheriff that I've seen before include "Scots judge" , "US law enforcement officer" , "Crown's county officer" , "Lawman of the wild west" , "US law-enforcement officer" .)