Devil-woman wantonly hit on one in fifties (6)

I believe the answer is:
lilith
'devil' is the definition.
(thesaurus)
'wantonly hit on one in fifties' is the wordplay.
'wantonly' is an anagram indicator (I've seen this in other clues).
'on' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'in' is an insertion indicator.
'fifties' becomes 'll' (Roman numerals).
'i' put within 'll' is 'lil'.
'hit' with letters rearranged gives 'ith'.
'ith' put after 'lil' is 'LILITH'.
'woman' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for lilith that I've seen before include "Witch" , "In Jewish folklore, Adam's first wife before Eve" , "Adam's first wife? - Frasier Crane's second ex-wife" , "In some sources she was the first wife of Adam" , "Ogress who attacks children (Semitic folklore) - Frasier Crane's (ex-)wife" .)
