Shocked into action, girl disappeared without a second thought (10)

I believe the answer is:

galvanised

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'shocked into action' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for galvanised that I've seen before include "Shocked into action" , "Shocked girl" .)

I've seen this clue in the Sydney Morning Herald.

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