In an exclusive interview with CBS News on Monday evening, Warren said she stands by her characterizations of why she left the job.

“All I know is I was 22 years old, I was 6 months pregnant, and the job that I had been promised for the next year was going to someone else. The principal said they were going to hire someone else for my job,” she said…

Asked by CBS News why she told the story differently at Berkeley a decade ago, Warren said her life since her election to the Senate in 2012 caused her to “open up” about her past. “After becoming a public figure I opened up more about different pieces in my life and this was one of them. I wrote about it in my book when I became a U.S. Senator,” she said in a statement from her campaign.