Pregnant, at first Rachel opts rebelliously to leave hospital -- it should handle delivery (6,4)

I believe the answer is:

parcel post

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'it should handle delivery' is the definition.
(postal service)

I can't explain the rest of the clue.

(Other definitions for parcel post that I've seen before include "Mail service" , "Means of sending packages" , "How something's sent" .)

I've seen this clue in The Telegraph.

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