[She definitely relaxes when she hears what the nature of the questions will be about, at least - And as she does, Gebura might be able to see part of one of her hands flicker.

...Kind of like a malfunctioning cognition filter, even.]

...There wouldn't be much of a difference, except...a Witch of Fortune would merely be more focused on Good Luck, or just luck in general. My powers are this strong due to the belief humans place in misfortune, so a Witch that ruled over Fortune itself would also be just as strong.