Backing, put a pound on for her (4)

I believe the answer is:

nola

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'her' is the definition.

'backing put a pound on' is the wordplay.
'backing' says the letters should be written backwards.
'put a pound' becomes 'al' (I am not sure about this - if you are sure you should believe this answer much more).
'al'+'on'='alon'
'alon' back-to-front is 'NOLA'.

'for' acts as a link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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