Juliet's town is just not on for her (4)
I believe the answer is:
vera
'her' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for vera that I've seen before include "senior songstress?" , "__ Lynn, the forces' sweetheart" , "Woman's name" , "Duckworth, Lynn" , "& 16 'The Forces' Sweetheart'" .)