Candace Owens says she is suing rapper Cardi B for defamation following a heated exchange on Twitter, in which the rapper posted a fake tweet depicting Owens saying that her husband cheated on her with her brother.

“Just spoke with my family. I am 100% suing Cardi for that nonsense. You can’t just start throwing out wild lies against private members of my family because you’re upset someone called your out on your degenerate performance,” Owens tweeted.

Owens took to Twitter on Tuesday to tell rapper Cardi B that her performance at the Grammy Awards on Sunday night was “grotesque,” adding that “there’s no person in America” wishing “their daughters turn out like you.” Owens and Cardi B engaged in a heated Twitter exchange, in which the rapper shamed the conservative commentator for making her husband a sandwich.

“Matter fact I’m just going to thank Candy. She put my performance on Fox News giving it more views that boosted the views on YouTube and is counting towards my streams and sales,” Cardi B tweeted. “STREAM UP AND WAP. REMEMBER GROWN PARENTS ONLY YOU CAN MONITOR WHAT YOUR KIDS WATCH NO1 ELSE.”