A girl's jocular retort (5)

I believe the answer is:

sally

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'retort' is the definition.
(I've seen this in another clue)

'a girl's jocular' is the wordplay.
'a girl' becomes 'Sal' (feminine given name).
'jocular' becomes 'ly' (I can't justify this - if you can you should give a lot more credence to this answer).
'sal'+'ly'='SALLY'

Can you help me to learn more?

(Other definitions for sally that I've seen before include "Charge" , "Sortie; witty retort" , "Girl" , "- - Lunn, flat cake" , "Rush out suddenly" .)

I've seen this clue in The Globe and Mail.

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