Girl supplying article about South Africa (7)
I believe the answer is:
theresa
'girl' is the definition.
'article about south africa' is the wordplay.
'article' becomes 'the' (the 'definite article' part of speech).
'about' becomes 're' (regarding).
'south africa' becomes 'sa' (abbreviation).
'the'+'re'+'sa'='THERESA'
'supplying' is the link.
(Other definitions for theresa that I've seen before include "Maria -, eighteenth century empress" , "Avila/Lisieux saints' name" , "Woman" , "Maria --, Austrian ruler" , "Girl" .)