While John campaigned across the country, Elizabeth, the woman who'd stood by his side for so many years, took a step back.

At first, Elizabeth says she canceled speaking engagements because she simply couldn't go through with them.

"It would just be sort of overwhelming," she says. "I was still angry and hurt and had a lot of self-doubt about who I was and what I meant to him. You know, all those things that I think women in my position go through."