Crossword Genius

Respond to warning, perhaps, for member of literary trio (5,4)

Ross

I believe the answer is:

acton bell

'for member of literary trio' is the definition.
(Bront sister pseudonym)

'respond to warning' is the wordplay.
'respond to' becomes 'act on' (I've seen this before).
'warning' becomes 'bell' (a bell might be used as a warning).
'acton'+'bell'='ACTON BELL'

'perhaps' acts as a link.

I've seen this clue in The Guardian.
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