Giving evidence in Federal Court on Thursday, Ms Higgins also denied her claims around the alleged rape by Bruce Lehrmann had been adapted and evolved over time.
Lehrmann has sued Network Ten and journalist Lisa Wilkinson for defamation over a February 2021 report on The Project where Ms Higgins was interviewed.
The rape allegedly occurred in the Parliament House office of Lehrmann and Ms Higgins' then boss, senator Linda Reynolds, in the early hours of March 23, 2019.
Lehrmann denies that any sexual intercourse or intimacy occurred.
Bruce Lehrmann denies claims by Brittany Higgins of sexual assault in a Parliament House office. (Dean Lewins/AAP PHOTOS)
Under cross-examination by Lehrmann's barrister Steven Whybrow SC, Ms Higgins was taken to a $325,000 book deal she signed with Penguin Random House for a non-fiction account of the events surrounding the alleged rape.
Already receiving around $108,000 as an advance, Ms Higgins denied she had a financial interest in the outcome of the defamation proceedings given she was still yet to receive approximately $216,000.
"If I ever actually finish the book, I will donate all $200,000 whatever to charity. I don't care about the money," she told Justice Michael Lee.
A draft of the novel sent to Penguin in April 2021 was "crap" and contained inaccuracies about the alleged rape, Ms Higgins said, saying her evidence to the court was the actual truth.
Ms Higgins was questioned about how her evidence had changed over time, including the timing of a panic attack she had in Parliament House and the location of a box of chocolates she claimed she polished off after the alleged rape.
"I want to suggest to you that is an example of your evidence evolving as you find out new information," Mr Whybrow said.
"No, I don't accept that," Ms Higgins answered.
Lisa Wilkinson and Network Ten are being sued for defamation by ex-Liberal staffer Bruce Lehrmann. (Dean Lewins/AAP PHOTOS)
Lehrmann has already given evidence in the trial and has admitted to a number of lies and false statements he gave to police, Parliament House security, his employer and supervisor, and the media.
He was charged in August 2021 over the alleged rape, but his criminal trial in the ACT Supreme Court was derailed by juror misconduct. Prosecutors did not seek a second trial, citing concerns for Ms Higgins' mental health.
A landmark report into the ACT legal system and the Higgins case in August made damning findings against former director of public prosecutions Shane Drumgold, which he has sought to challenge.
Lehrmann is also before Queensland courts accused of raping another woman twice in Toowoomba in October 2021.
He has not yet entered a plea, but his lawyers have indicated he denies the charges.
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National Sexual Abuse and Redress Support Service 1800 211 028
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