A country girl (in Reading?) (7)
I believe the answer is:
perusal
'reading?' is the definition.
(I know that perusal is a type of reading)
'a country girl' is the wordplay.
'a country' becomes 'peru' (Peru is an example).
'girl' becomes 'Sal' (feminine given name).
'peru'+'sal'='PERUSAL'
'in' acts as a link.
(Other definitions for perusal that I've seen before include "Reading, examination" , "worth a close look" , "Thorough read-through" , "Thorough reading" , "Inspection" .)