Said Olivia embraced hero (4)
I believe the answer is:
idol
'hero' is the definition.
(thesaurus)
'said olivia embraced' is the wordplay.
'embraced' indicates the answer is hidden within the clue.
'IDOL' can be found hidden inside 'said olivia'.
(Other definitions for idol that I've seen before include "Personal hero" , "A matinee -- is a handsome actor" , "Graven image or greatly admired person" , "Object of reverence" , "Object of excessive love or devotion" .)