Why Does a Governor with No Foreign Policy Experience Assume that a Protest Ahmadinejad Rally is about Her?

Sarah Palin blamed Democrats for a Jewish group disinviting her to speak at a rally to protest Mahamoud Ahmadinejad's appearance at a United Nations assembly next week. Why would she take attention away from the cause of checking Iran's nuclear ambitions in order to put it on her absence? Has her new-found celebrity, her 15 minutes of fame gone to her head?