Her silly empty threat over servant, famous film character (5,6)
I believe the answer is:
rhett butler
'famous film character' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'her silly empty threat over servant' is the wordplay.
'silly' indicates anagramming the letters.
'empty' suggests removing the centre.
'over' means one lot of letters go next to another.
'servant' becomes 'butler' (butler is a kind of servant**).
'threat' with its centre removed is 'tt'.
'her' with letters rearranged gives 'rhe'.
'rhe'+'tt'+'butler'='RHETT BUTLER'
Can you help me to learn more?
(Another definition for rhett butler that I've seen is " Hero of the above".)