Respected female expert finished hoarding foreign currency (7)
I believe the answer is:
doyenne
'respected female' is the definition.
'finished hoarding foreign currency' is the wordplay.
'finished' becomes 'done' (both can mean completed).
'hoarding' means one lot of letters goes inside another.
'foreign currency' becomes 'yen' (currency of Japan).
'done' enclosing 'yen' is 'DOYENNE'.
'expert' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for doyenne that I've seen before include "Respected lady" , "Respected female leader in a field" , "An older academic" , "Senior person" , "Respected senior woman" .)