Hallie's twin in "The Parent Trap" (5)

I believe the answer is:

annie

(Other definitions for annie that I've seen before include "Inane (anag) - girl (with a gun?)" , "Little orphan girl" , "Sharpshooter Oakley or musical orphan" , "Little Ophan .....; also a musical" , "-- Laurie, Scots song" .)

I've seen this clue in the USA Today.

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