In her book, Kitty Kelley has done extensive research. The notes section alone is about 50 pages. She obviously tried to get what she perceived as facts - but I can't help but think that most of the people she interviewed (no close friends, but some family and co-workers) must have a grudge because of her success.
I also must admit I started to read it b/c I heard that noone would interview Kitty Kelley for fear of the wrath of Oprah....
karenos