Female gave a kiss when nagged (9)
I believe the answer is:
Here is my best explanation:
'nagged' is the definition.
'female gave a kiss' is the subsidiary indication.
'female' becomes 'hen' (hen is a kind of female).
'gave a kiss' becomes 'pecked'.
'when' is the link.
(Other definitions for henpecked that I've seen before include "Bullied", "Domineered by wife", "Harassed", "Nagged and brow beaten as by wife", "Of husband, bullied as by domestic fowl" and "Dominated by wife".)