Sister’s position: not one picked up by poet (7)

I believe the answer is:

nunhood

'sister's position' is the definition.
(state or position of being a nun)

'not one picked up by poet' is the wordplay.
'not one' becomes 'none' (I've seen this in another clue).
'picked up' indicates a 'sounds like' (homophone) clue.
'by poet' becomes 'hood' (I've seen this in other clues. I am not sure about the 'by' bit.).
'none' is a homophone of 'nun'.
'nun'+'hood'='NUNHOOD'

(Another definition for nunhood that I've seen is " Perhaps a conventional state".)

I've seen this clue in The Times.

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