In her deal with Jefferson, she states that he will have what he asks for. However, if she has used the last of her magical items in the hat, how will she be able to rewrite the Jefferson story as he asked her to for his price for their deal?
I guess she can’t, unless it’s some other type of magic and because it’s curse specific, she can still amend it, because it’s different to having to create magic like they did to make the hat work.