You're welcome, Steve. Sorry I couldn't recommend anything from firsthand experience but I didn't get the "shoe gene" most women have! :O)
There was one more I ran across but for the life of me I can't tell if it's still in operation, and their website wasn't functioning for me at all; could be my browser, though:
https://www.facebook.com/Dal-Co-240271354825/?ref=page_internal
http://www.dalco-roma.com
IF they're still open, these shoes would be very expensive, and I saw mention somewhere that it took at least 3-4 weeks to get them (they're mailed if not picked up in Rome.) I'm guessing sandals are the most popular "custom" type because of the much shorter time it takes to make them and the price tag. If those aren't what she's after, she might consider a high-end Italian brand of "off the rack" shoe such as Ferragamo, Bruno Magli, etc?