Transcript for Omarosa Manigualt recalls last time she spoke to Trump, says he 'not a racist'
Donald Trump has famously said to you many times, you're fired. Is that what happened this time? Did he say you're fired? No, no. You know, I -- the president found out about my resignation by watching the news. Reporter: When it comes to omarosa, the reality show star turned white house staffer, it seems there's always two sides. She insists she resigned her position from the trump administration. But white house officials tell ABC news that she was pushed out by chief of staff John Kelley. You're saying you resigned, weren't fired this. I resigned after a conversation I had with general Kelley, one on one, in the situation room. In the situation room? Well, you know, yes. That's the most secure, private place to have a conversation like this. Was it a tense conversation? Absolutely. Because I raised issues that I had concerns. I had some grave concerns. What kind of concerns? I talked to him about some concerns that I had about issues, about one very urgent issue and pressing issue that would affect the president. In a big way. Reporter: And that's all she'll say on that. Part of the story she's not ready to tell. At least until after January 20th when her job ends. The white house is not my ceiling, Deborah, it's just the beginning. Reporter: With omarosa there's always a story. Omarosa Manigault has many chapters. Once portrayed as the villain on "The apprentice." Parlayed into success in her job, the old boss becoming the new boss, office of the public liaison, one of the highest-ranking blacks in the white house. Omarosa admits her lone position in the white house isn't easy. I know what it's like to be the only black person at the table. What was that like for you to sometimes be the only minority sitting there at a table? At times it was very difficult. I worked with 30 assistants to the president. I looked to my left, looked to my right, and the only people who were there were folks that didn't look like you and I. There was a lack of diversity that I will acknowledge. And at times it was very lonely. Reporter: Today the white house insisting that its team is very diverse. President trump offering praise. I like omarosa. Omarosa is a good person. When did you speak to the president last? Yes, midafternoon. You said this morning he wanted you on his tell. Is he upset that you're no longer going to be on his team? He was sad to learn about my departure. Reporter: She calls the president a friend since he first fired her on the apprentice. Omarosa has to go. You're fired. Reporter: Thrusting her into the national spotlight. Controversial on reality TV, omarosa brought her penchant for a fight into politics, working briefly as an aide in the Clinton white house. Then she crossed over to the Republican side. Quick to defend her friend, then-candidate Donald Trump, as many saw on "Frontline." Every critic, every detractor, will have to bow down to president trump. Reporter: And today still defending him. Even against long-standing accusations of bigotry. Does the president understand that a lot of people in minority communities see him as racist? I can't speak for what he understands or what he knows. Do you think this president is racist? Absolutely not. I would never sit nor work for someone who I believed to be a racist. White lives matter! Reporter: But she says there are some incidents that are hard for even her to defend. When self-professed neo-nazis marched on charlottesville, Virginia, the president offered these inflammatory comments. You also had people that were very fine people -- I believe that America collectively looked at the images of white men with torches marching down a southern street, and we all were shocked and repulsed by what we saw. Yet the president said they were fine people in that crowd and there were bad folks on either side. Yeah, and I know that -- Did that concern you? Absolutely. Reporter: His words set off a wave of critique from all races and both political parties. Congresswoman Maxine waters saying the president has turned the white house into the white supremacist's house. Many people feel that the president at worst is a racist, at best is a sympathizer for white supremacists. Is he? Donald Trump is racial. But he is not a racist. Yes, I will acknowledge many of the exchanges, particularly in the last six months, have been racially charged. Do we then just stop and label him as a racist? No. Reporter: For many people of color, that's a deal breaker. Truth be told, she's really a pariah in the African-American community. Reporter: This CNN clip of political commentator Angela rye rejoicing at omarosa's departure going viral. Bye, honey, you have never represented the community. Some black people label you a sell-out, "Oh, she's a joke." How tough has that been for you? Deborah, first of all, in this business you can't take anything personal. Reporter: Now omarosa is another name in a list of high-profile departures from the white house. Do you worry that you leave somehow tainted by this administration? Um -- no. That's a very interesting assessment. I hadn't thought about tainted. Serving your country should never taint you. Reporter: After January, omarosa goes back to her personal life. She is a newlywed, after all. Married to Jacksonville pastor John Allen Newman. I love you, baby. You too. Reporter: Don't expect her to stay put for long. Omarosa says she's got plenty to tell when the time is right. Were you concerned at all sometimes by the president's tweets? I can't wait to talk about his tweets in the future. But I won't do that until I'm out of this office. I can't wait. Because there's so many. Is there a book in the works? Sounds like a book. It's been 24 hours. You're way ahead of me. Or a reality show? Reporter: For "Nightline," I'm Deborah Roberts in New York.
This transcript has been automatically generated and may not be 100% accurate.