Mrs. Palin couldn't handle the pressure of announcing her daughters pregnancy (without running into hiding for weeks after her great Convention, that is no pressure as compared to what is handled daily by POTUS/CinC). Mrs. Palin had her as$ handed to her by a dimwit in Couric and then ditto that with C. Gibson. She than couldn't handle the pressures (or perhaps it was the lack of MSM attention should wouldn't be getting) by continuing to do her job as Governor of AK.
Mrs. Palin is someone obsessed with....Mrs. Palin. Much like McCain in a lot of ways (only with somewhat better politics) but they are the last type people / personalities we should want as POTUS / CinC.