Nothing shocking for a girl (5)
I believe the answer is:
olive
'a girl' is the definition.
(girl's name)
'nothing shocking' is the wordplay.
'nothing' becomes 'O' (O resembles 0).
'shocking' becomes 'live' (I am not sure about this - if you are sure you should believe this answer much more).
'o'+'live'='OLIVE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for olive that I've seen before include "Yellowish-green colour" , "One [TYPE OF TREE] is from the Mediterranean" , "Oil-yielding fruit" , "Small green Mediterranean tree-fruit (5)" , "woman" .)