President Donald Trump and Omarosa Manigault Newman continue to reprise their roles as feuding reality stars this week, with the president insulting the former aid on Twitter and Omarosa appearing on television with secretly recorded audio from her time in the White House.

In his most recent tweet about the former White House employee, President Trump referred to Omarosa as a “crazed, crying lowlife” and a “dog.”

Trump’s attacks come as Omarosa continues to promote her book, Unhinged: An Insider’s Account of the Trump White House, out August 14. The book includes a claim that the president allegedly used the N-word during a taping of The Apprentice. That prompted the president to tweet a denial of the existence of the tape and that he’d ever said that word.

Despite that, Omarosa has subsequently released audio that, according to CBS News, appears to back up Omarosa’s claim that Trump advisors discussed the existence of a tape during the 2016 campaign.

This isn’t the first tape Omarosa has revealed during this dispute. The former White House liaison to black voters recently revealed she taped her firing by Chief of Staff John Kelly and a subsequent conversation with President Trump. The existence of the recording raised questions regarding White House security, specifically in the Situation Room, where the firing and taping took place.

In previous tweets, Trump has referred to the former aid as “wacky,” “deranged,” and “not smart.” In one tweet, he claims to have given her her job because she cried and begged.

The Associated Press reported that, during a recent appearance on NBC, Omarosa said Trump has a pattern of insulting the intelligence of African-Americans, and she’s right. Trump calling a black woman “vicious, but not smart” isn’t surprising because he has a history of making these types of comments.