She has to take £50 to the office before early closing (5)
I believe the answer is:
polly
'she' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for polly that I've seen before include "' 197> - put the kettle on'" , "Parrot's name" , "- - Toynbee, columnist" , "Parrot; girl's name" , "Common name for a parrot" .)