Sweet little thing found in harem perhaps (7)

I believe the answer is:

sultana

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'sweet little thing' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for sultana that I've seen before include "Sovereign's mother perhaps" , "Shrivelled up" , "pudding ingredient" , "Muslim ruler's wife perhaps" , "Aunt Sal (anag)" .)

I've seen this clue in The Times.

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