Well, for SS, I'd say you could do anything from History to WDW culture (how pixie dust is created for each guest) to the cultures represented in EPCOT (do a small project on how each country was created by people from that country, as well as what is done by those from that country who work there, and include the small details that make each country represented *truly* well-represented).
You could also present the theming from any 1 park to describe the culture or historic period each area represents and how it is accurate (or if she thinks there are discrepancies).