Girl embodying Margaret Thatcher's single-minded approach (4)

I believe the answer is:

tina

This clue is a double definition.

'girl' is the first definition.
(girl's name)

'embodying margaret thatcher's single-minded approach' is the second definition.
(short for 'There is no alternative', Tory slogan)

(Another definition for tina that I've seen is " Ain't this a girl?".)

I've seen this clue in The Guardian.

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