I am aware that in some cultures witch doctors exist, but I personally do not believe this story, and dare I say it, I don't believe in witch doctors. Furthermore, if she did pay a witch doctor into casting spells on William, bearing in mind the majority members of this forum believe that Kate is only intrested in marrying William for his title, then if I were her I would ask for money back because its obvious the spell isn't working.
If however, the story is about visiting a psychic, then it sounds to me she is just curious about those sort of things as you and I. No harm in that.
I agree wholeheartedly with mbb on this, its not as if the press are intrested in this story otherwise they would have mentioned it, and I also agree with mbb when she/he implied if spells have been cast then bad karma would come back to haunt Kate.
I personally, do not think that William is either weak or indecisive. I base that opinion on his surprise decision to stay with the RAF and train in S & R. Remember, the palace had a major schedule laid out for him to prepare him for the role of future king. William comes across as quite stubborn in his views, he will not be pushed into anything, not even by the Queen herself.