She's already dribbled out audio recordings of conversations, and video clips, texts or email could follow, according to the person who described what Manigault Newman has called a multimedia "treasure trove."
Manigault Newman claims Trump officials offered her a job on the campaign as a way of silencing her, after she was fired from the White House.
Simon & Schuster this week also dismissed threatened legal action from Trump's campaign.
A campaign attorney told Simon & Schuster in a letter that "Unhinged" violated Manigault Newman's confidentiality agreement, but the publisher responded that it was acting "well within" its rights.
In another recording, Trump's daughter-in-law, Lara Trump, is heard offering Manigault Newman $15,000 a month - after she was fired from the White House - for a campaign job requiring her to be "positive."