She is an interesting being, to say the least. I do not think she operates in the same way you think a 'witch' does. She can move you through time and space, this is true, but... she has her constraints. From what I can tell from my interactions with her, she has a very strict set of rules she moves within, to the point that some of the things I wanted for her she told me she could not do. The values were not equal.