Mary Trump, the niece of former President Donald Trump, appeared Monday on the ABC daytime talk show "The View" to discuss the Jan. 6 Capitol riot, as well as race and gender topics with hosts Joy Behar, Whoopi Goldberg, Sunny Hostin, and Sara Haines.

Noticeably absent was Meghan McCain, who is set to permanently leave the show Friday.

During the interview, Mary Trump didn’t shy away from calling out McCain.

“It’s a shame that your colleague didn’t have the courage to come on and have this conversation with me, but I appreciate that you are all willing to take up these very difficult subjects because racism in my view is at the heart of everything that’s wrong in 21st Century America,” Mary Trump said.

Mary Trump, 56, has been a fierce critic of Donald Trump and other members of the Trump family. The psychologist's tell-all book, "Too Much and Never Enough: How My Family Created the World's Most Dangerous Man," was released in July 2020 and provided an inside look at the family financial dealings, which included suspected tax fraud. She has a new book set for release on Aug. 17.

Following Mary Trump's comments, McCain, a conservative who also has taken issue with Donald Trump, took to Twitter to condemn the Trump family.

“There is no ‘good’ Trump family member to me,” she tweeted.

The same tweet also included an expletive. "Continue to wish they would all just leave me and my entire family the f--- alone," it read. The tweet received 1,700 likes.

McCain told Fox News that "I thought [Mary Trump] was too irrelevant for my time."

Also on Monday, McCain posted a video on Twitter from the drama "Mad Men" that seemed to suggest that she was leaving the show in four days on a high note.

None of "The View" co-hosts touched on McCain’s absence from the episode.

Meghan McCain
Meghan McCain at the Netflix "Medal of Honor" screening at the U.S. Navy Memorial Burke Theater in Washington, D.C., on Nov. 13, 2018. Tasos Katopodis/Getty Images