A sailor girl with unmarried sisters in her care (6)

I believe the answer is:

abbess

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'unmarried sisters in her care' is the definition.
I can't judge whether this defines the answer.

'a sailor girl' is the wordplay.
'a sailor' becomes 'ab' (abbreviation for able seaman).
'girl' becomes 'bess' ().
'ab'+'bess'='ABBESS'

'with' is the link.

Can you help me to learn more?

(Other definitions for abbess that I've seen before include "Principal of convent" , "Superior nun" , "Head nun" , "Religious leader" , "Head of convent" .)

I've seen this clue in The Globe and Mail.

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