She has assumed pastoral responsibilities (11)
I believe the answer is:
shepherdess
'she' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I can't see?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for shepherdess that I've seen before include "Little Bo-Peep, for example" , "Little Bo-Peep perhaps" , "She guards flock" , "Country girl" , "Tender of animals" .)