The little girl becomes the witch?

Rating: 10/10 (22 February 2005)

When William goes back to talk to the little girl Jenny who is now grown up she tells him of the relationship between herself and Edward Bloom. At the end of the story she says to him that the little girl grew up to become the witch with the glass eye. Of course William says that this doesn't make sense as the witch was old when Edward was a little boy, and she explains herself by saying that all the women in the world who were not his wife Sandra were the same to him He did not distinguish between them.
However i am unclear as to whether she actually is the witch or if she is lying and none of her story was true. Why would she say that the little girl she used to be grew up to be a witch? There must be some significance there. Also I wonder how she knew about the witch in the first place if it wasn't her.
Also, going back to Edwards view that there are only two women, his wife and all the rest, how does the lady of the lake fit in? The big fish. Is the fish his wife, who he caught with a wedding ring? At first I thought he himself was the Big Fish because of the advice the witch gave him when he left his home town ; "the biggest fish in the river gets that way by never being caught" but now I am not sure. I would love feedback from anyone who has some ideas on these points.