The only description we are given of the Governor's Wife is that she is expensively dressed like the rest of his family. In writing a play, you never know who the actor or actress might be, though you may have an idea of how you'd like them to look. I picture the Governor's wife as arrogant... someone with a spoiled, condescending attitude. Her physical attributes don't really come into play.
They are followed the Ironshirts and then, expensively dressed, the governor's family.
Governor's Wife: Why? I've got to take this silver dress— it cost a thousand piasters. And that one there, and where's the wine-colored one?