Donald Trump’s attacks helps push Omarosa Manigault Newman’s book, Unhinged, to number 1 on the New York Times bestseller list this week, CNN reports. Plus Newman came with so many receipts that she was able to back up every recording she released.

“Manigault Newman should thank Donald Trump for her success. Even before the book was officially released on Aug. 14, the president started firing off angry tweets, gassing up public interest far beyond anything the publisher or the author could have managed by themselves,” the Washington Post reports.

Omarosa outplayed Trump every step of the way, starting with her releasing the recording of White House Chief of Staff John Kelly threatening her with legal action during her firing in the Situation Room, to Lara Trump offering her $15,000 a month in hush money payments, as well as chatter about Trump using the n-word.

Trump attacked Omarosa as a “crying lowlife” and “that dog” as he spun out of control over the book and the revelation that she has over 200 tapes, plus videos, text messages and emails to back up her claims. In other words, she has receipts. Lots of receipts.