Young woman shorn of resistance finally consented: don’t do this to Lily! (4)
I believe the answer is:
gild
'don't do this to lily' is the definition.
(as in the phrase 'gild the lily')
'young woman shorn of resistance finally' is the wordplay.
'young woman' becomes 'girl' (synonyms).
'shorn of' is a deletion indicator.
'resistance' becomes 'r' (abbreviation).
'finally' becomes 'd' (I can't explain this - if you can you should give a lot more credence to this answer).
'girl' with 'r' taken out is 'gil'.
'gil'+'d'='GILD'
'consented' acts as a 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 gild that I've seen before include "Decorate with gold leaf" , "Cover thinly with gold" , "Cover with gold leaf" , "Coat in gold" .)