Guy who became Pres asked her to be his VP. This was done to garner votes. Pres had a hemmorage and died. But between the brain surgery and his death the Pres asked her to resign since she was an independent and didn't share his "vision". This of course would pave the way for the speaker of the house to become pres. So she has a speech all written up when the Pres actually dies (they were hoping he'd live and just resign himself). So they (staff, chief justice, attorney general, speaker of the house, etc) meeet at the VP's mansion and the speaker and VP are talking and well he said the wrong thing so she decided to take the oath of office.