The FBI was secretly listening last year when a high-ranking advisor to Gov. Gavin Newsom unleashed a stream of profanities as she vented about a public records request from an unnamed individual.

“Double f— her!” said Dana Williamson, Newsom’s chief of staff, repeating the f word throughout the conversation. She also called another person an “a—,” according to federal court documents made public this week.

Before Wednesday, few people outside of California’s political bubble likely knew Williamson’s name.

Now she’s engulfed in a scandal involving political consultants and illicit payments that threatens to haunt her former boss, Newsom, as he challenges President Trump and looks toward the 2028 presidential race.

A smart and savvy negotiator who bridged Sacramento’s overlapping worlds of government, business and labor, Williamson is also someone who picked unnecessary fights and launched cruel missives, political consultants and friends said this week.

Federal agents arrested Williamson Wednesday at her home in Carmichael, a Sacramento suburb. Her lawyer, former U.S. Atty. McGregor Scott, was furious about how the arrest was handled, saying she was seriously ill and in need of a liver transplant.

Federal prosecutors allege that she conspired to funnel money out of one of her one-time client’s state campaign accounts for bogus services, and falsified documents related to her COVID loan.

She also is accused of lying on her tax returns about luxury items and services, including a $150,000 birthday trip to Mexico, that she allegedly sought to pass off as business expenses, according to the government.

Williamson, who pleaded not guilty to the charges this week, appeared in a courtroom in Sacramento. She appeared solemn during the hearing, at one point reportedly lifting her cuffed hand to wipe away a tear, and left without talking to reporters.

Court documents filed this week paint an image of both a conniving player and a fragile individual. “I’m scared,” she wrote in a February 2022 text message to a colleague as they discussed the alleged money-laundering scheme, which was allegedly in the early planning stages.

Public affairs consultant Steven Maviglio has known her since the two worked in President Clinton’s administration — and then later the administration of Gov. Gray Davis. He is now trying to put together a legal defense fund for her.

He described Williamson as a “no nonsense, no BS, get it done” person who was “straight-talking, sometimes to the point of offensive to people.”

She regularly dropped f-bombs, he added.

In another recording captured by the FBI, Williamson joined two colleagues last year in a restaurant near the state Capitol in Sacramento. The government was asking questions about money she received through her COVID loan.

She complained about the “f—” drama and said her Paycheck Protection Program (PPP) loan got “popped” — before adding another swear word. According to federal officials, she created false contracts in an attempt to show the COVID money was appropriately used.

There is little sympathy from her detractors. Gil Duran, the former press secretary to Gov. Jerry Brown, who worked alongside Williamson, likened her to a “mafia boss” in an interview with CNN. She also has numerous defenders in Sacramento, many of them women, who view her as a tough and inspiring figure.

The details in the federal filings sent shock waves beyond Sacramento and the state Capitol this week.

“I’m stunned about the allegation and find it hard to believe,” said Alison Gaulden, who supervised Williamson when she worked as an associate vice president of public affairs for Planned Parenthood Mar Monte from 2002 to 2004.

Gaulden described her as “incredibly bright and well versed in policy. I’ve admired how she grew in her career.”

Williamson, who grew up in Santa Rosa, moved between the private and public sectors, and was employed by three governors, Davis, Jerry Brown and Newsom.

At Pacific Gas and Electric Co. (PG&E), she worked alongside two other women who would be remarkably influential in her life: Nancy McFadden, the late advisor to Brown and Alexis Podesta, a longtime California political insider who also appears in the federal court documents filed this week.

Podesta is the person identified as “Co-Conspirator 2,” but has not been charged and is cooperating with investigators, according to her attorney.

Williamson was hired as a senior advisor for Brown and was later promoted to Cabinet secretary.

While working for Brown, Williamson publicly advocated for children’s health, testifying in favor of legislation that would eliminate the state’s personal-belief exemption for childhood vaccines. She said the issue was meaningful to her because she was a mother of four.

“Usually, staff doesn’t speak on bills, the great thing about the governor is that he respects that we are people first,” Williamson told the San Francisco Chronicle. “This was important to me.”

Business advocates appreciated her direct approach when she worked for Brown.

“She was very straightforward, she was a good person to work with,” said Stuart Waldman, president of Valley Industry and Commerce Assn. He said he hadn’t dealt with her in years.

She flip-flopped between private and government work, drawing criticism from groups like Consumer Watchdog for her “revolving door” career.

In one episode, she was allegedly seen negotiating for her energy clients in Brown’s office as the state hammered out details over a grid deal, drawing outrage from the watchdog group.

She started her own government relations firm, Grace Public Affairs, which handled an array of campaigns, including the online sports betting initiative Proposition 27, which appeared on the 2022 ballot, but failed to pass.

Her clients included California Insurance Commissioner Ricardo Lara, and former Atty. Gen. Xavier Becerra, whose campaign fund was allegedly raided by Williamson, and others.

By 2017, she had a close group of female friends, who had also risen to the top of their professions. But to those who weren’t in her inner circle, she was all elbows, one political insider said this week.

At the California Democratic Party headquarters in downtown Sacramento, a bronze statue of Williamson’s then-5-year-old daughter was installed as part of a campaign to promote female empowerment following Democratic presidential candidate Hillary Clinton’s 2016 loss.

Those behind the statue included Williamson’s friends Robin Swanson, a Democratic communications consultant, and Angie Tate, then a chief fundraiser for the California Democratic Party.

The installation was intended to mimic the “Fearless Girl” statue at New York’s Wall Street, which shows a 4-foot young woman looking defiantly at the famous charging bull statue.

In 2022, Newsom’s office announced Williamson was joining his office as chief of staff. Though the two weren’t particularly close when she joined, she quickly became part of his inner circle, Politico reported at the time.

Anthony York, Newsom’s former communications director and a former L.A. Times reporter, told Politico at the time that Williamson was not intimidated by the governor’s celebrity status. “She gives zero f—s, which is part of what makes her so great,” York said.

During her time in Newsom’s office, she worked with former Senate leader Darrell Steinberg on the successful passage of Proposition 1, which borrows billions of dollars for mental health services, and was a personal issue for her family.

“I had a particularly tough experience with my husband that I learned a lot from… when the incident happened with him, I learned about all the holes in the system,” she told KQED.

She moved from Elk Grove last year to Carmichael, purchasing a home for $1.695 million, according to property records. The records show her linked to several homes in Elk Grove, including one that went into foreclosure in 2012.

Williamson would send off combative messages, including social media posts or texts, often at night. Among her targets: California Labor Federation President Lorena Gonzalez and U.S. Rep. Kevin Kiley (R-Rocklin), whom she called an “entertaining idiot” on X.

She took aim at former Assemblymember Kevin McCarty during his campaign last year for Sacramento mayor. She called him a “devil” on X and urged others not to vote for him, before her comment was taken down a few days later.

Newsom placed Williamson on leave when she informed him last year she was under criminal investigation. Her last day in office was in November 2024. At the time, the governor said in a statement that “her insight, tenacity, and big heart will be missed.”

This week, a spokesperson for the governor struck a different tone: “Ms. Williamson no longer serves in this administration. While we are still learning details of the allegations, the Governor expects all public servants to uphold the highest standards of integrity.”