She soon sounds inconclusive (3)

I believe the answer is:

sue

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'she' is the definition.

I don't understand how the remainder of the clue works.

(Other definitions for sue that I've seen before include "Take legal action against (someone), girl's name" , "Start proceedings against (someone)" , "Plead" , "Litigate" , "The girl to take to court" .)

I've seen this clue in the Evening Standard.

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