Woman, a second bewitching singer making comeback (7)
I believe the answer is:
nerissa
'woman' is the definition.
'a second bewitching singer making comeback' is the wordplay.
'a second' becomes 'as' (I've seen this in other clues).
'bewitching singer' becomes 'siren' (I've seen this before).
'making comeback' is a reversal indicator.
'as'+'siren'='assiren'
'assiren' backwards is 'NERISSA'.
(Other definitions for nerissa that I've seen before include "Portia's attendant" , "Girl from Belmont" , "Serving maid" , "One working for Portia" , "Lawyer's clerk apparently" .)