Goddess by that time in sober company? (6)
I believe the answer is:
athena
'goddess' is the definition.
(I know that Athena is a goddess)
'that time in sober company?' is the wordplay.
'that time' becomes 'then' (I've seen this in another clue).
'in' means one lot of letters goes inside another.
'sober company?' becomes 'AA' (Alcoholics Anonymous).
'then' placed into 'aa' is 'ATHENA'.
'by' acts as a link.
(Other definitions for athena that I've seen before include "wise but fierce goddess" , "Greek goddess of wisdom etc." , "Greek goddess of a capital city" , "One-time goddess" .)