Use for microwave that woman put back before having meal (9)

I believe the answer is:

reheating

'use for microwave' is the definition.

'woman put back before having meal' is the wordplay.
'woman' becomes 'her'.
'put back' says the letters should be written backwards.
'before' says to put letters next to each other.
'having meal' becomes 'eating' ().
'her' reversed gives 'reh'.
'reh'+'eating'='REHEATING'

'that' is the link.

(Another definition for reheating that I've seen is " Perhaps preparing leftovers".)

I've seen this clue in The Guardian.

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