She resides in bachelor actor's retreat (5)
I believe the answer is:
carol
'she' is the definition.
'resides in bachelor actor's retreat' is the wordplay.
'resides in' says the answer is hidden in the clue (I've seen 'residing in' mean this).
'retreat' says the letters should be written in reverse.
'lorac' can be found hidden inside 'bachelor actors'.
'lorac' in reverse letter order is 'CAROL'.
(Other definitions for carol that I've seen before include "Canticle" , "Coral (anag.)" , "Christmas ditty" , "Joyful song - woman's name" , "Female" .)