Craftsman unexpectedly visits her mill regularly (11)
I believe the answer is:
silversmith
'craftsman' is the definition.
(I know that silversmith is a type of craftsman)
'unexpectedly visits her mill regularly' is the wordplay.
'unexpectedly' indicates anagramming the letters.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'mill' are 'ml'.
'visits'+'her'+'ml'='visitsherml'
'visitsherml' with letters rearranged gives 'SILVERSMITH'.
(Other definitions for silversmith that I've seen before include "Argentine worker" , "artisan" , "Craftsman" , "Fine metal worker" , "Metalworker" .)