Hey Paul,
No leads on apartments, but try one of the on-line finders such as
http://www.apartments.com. More to the point, when you come to Savannah, on the west side of town (at Savannah/Hilton Head International Airport) there are a TON of hotels. You should be able to find a room for a few days at a fairly reasonable rate. Then grab a copy of the local apartment finder publication (they're everywhere) and start looking.
Finally, feel free to contact me with a PM if you'd like. My wife and I are both Savannah natives and would be glad to offer any advice we can. By the way, there is a frequent poster to this forum who is associated with SCAD, and may chime in with some input.
Anyway, best wishes to your stepdaughter. SCAD has contributed a lot to Savannah, and is a real asset.