I believe that Sarah Palin had two enemies who should make an explanation of why they left her high and dry. Listing them numerically should not be taken as an assignment of 'order;' it's just convenient.
1. Whoever dragged her on to the national stage last year. The McCain campaign was not populated with novices. They were experienced campaigners. It was quickly obvious that she was not able to handle it, and that the more opportunities she was given to speak, the less she could manage to control the message.
2. Herself, for craving the limelight to such a degree that she "said yes without blinking." Had she blinked, it might have occured to her that she would have both positive and negative stories told about her. She would have known that scrutiny would begin as soon as they were off the stage, and that her real life would not fit the story that she was packaged with for the benefit of the "base," for whom she was specifically chosen to mollify.
Both of these people owe her, and her family an apology.