I know we have a board member from Milan but that is quite a ways from Sorrento. Don't know if I would get much quilting done if I lived in such a beautiful part of the world. :P
Anyway I just did a quick google search using quilt shops in Sorrento Italy and got a hit to this page. Maybe she can seek out the shops near her for guidance and quilting friends.
http://www.cosman.nl/maps/map_en.php?cn=it