Kimberly Guilfoyle may be out of the Trump administration.
But according to a new report, some people inside Donald Trump’s orbit are worried that her departure could create an entirely different problem.
Anonymous insiders claim the former U.S. ambassador to Greece kept a private diary documenting years of personal and political drama involving the Trump family — a supposed “burn book” that allies fear she could eventually use to embarrass people she once knew intimately.
One source described the prospect of Guilfoyle returning to the United States angry and unemployed as a “nightmare.”
Another claimed that she “knows everything.”
The alleged diary has even been given a nickname by people familiar with the story:
“The Devil Wears MAGA.”
There is, however, an important caveat.
No copy of the alleged diary has been made public.
Its contents have not been independently verified.
Guilfoyle herself has not publicly confirmed that such a “burn book” exists.
For now, the explosive claim rests on anonymous-source reporting originally attributed to the Daily Mail.
That makes it a story about what Trump insiders reportedly fear — not proof that Guilfoyle actually possesses damaging evidence against the first family.
What is not in dispute is how suddenly Guilfoyle’s fortunes changed.
On Tuesday, the White House announced that she had been asked to resign as U.S. ambassador to Greece after weeks of reports alleging improper conduct.
President Trump had signaled the previous day that her job was in jeopardy.
“We’re not happy,” he told reporters.
After the decision was announced, Trump said Guilfoyle had done a good job but added that administration officials “didn’t like what we were reading.”
Guilfoyle denies wrongdoing.
She said after stepping down that the allegations were false and vowed to defend her reputation.
The controversy centers partly on Republican donor Eric Deters, who accused Guilfoyle of asking him to pay a $100,000 American Express bill before her Senate confirmation as ambassador.
Deters claimed that Guilfoyle discussed helping him gain access to senior administration figures in return.
Guilfoyle’s attorneys have challenged the allegations and disputed the characterization of the communications.
No court has found Guilfoyle guilty of bribery, corruption or any crime.
The scandal widened after additional reports raised questions about gifts, travel, relationships with Greek business figures and privileged access allegedly given to a lobbyist.
The State Department inspector general is investigating Guilfoyle and the U.S. Embassy in Athens, according to people familiar with the probe.
All of that explains why the newest “burn book” story is attracting so much attention.
Guilfoyle was not merely another political appointee.
For years, she was effectively part of the Trump family.
She began dating Donald Trump Jr. in 2018.
The couple became engaged and remained together for several years before their relationship ended in 2024.
During that time, Guilfoyle was deeply embedded in both the family’s private world and Trump’s political operation.
She appeared at campaign events.
She raised money.
She attended family gatherings.
She worked closely with major donors and Republican activists.
And she became one of the most recognizable surrogates for Trump’s political movement.
That proximity is what makes the anonymous warnings potentially significant.
“Kimberly knows where the bodies are buried,” one source told the Daily Mail, using the phrase figuratively to suggest she knows private information about the people around Trump.
“She knows the people, the secrets, the fights, the relationships.”
Another source reportedly offered an even simpler assessment:
“Keeping Kimberly happy keeps Kimberly quiet.”
Those comments paint a picture of an administration caught in an uncomfortable dilemma.
Removing Guilfoyle may have solved the immediate diplomatic controversy.
But according to the report, some Trump allies feared that stripping her of the prestigious ambassadorial post could free her to publicly discuss years of private information.
Again, that fear does not prove the information exists.
Nor does it prove Guilfoyle intends to reveal anything.
But the very suggestion illustrates how unusual her position is.
Few dismissed ambassadors have spent six years in a romantic relationship with the president’s eldest son.
Few have simultaneously been major political fundraisers, media personalities and members of the president’s social circle.
Guilfoyle occupied all of those roles.
Her breakup with Donald Trump Jr. also added another layer of personal tension.
The couple ended their engagement in 2024, around the time Trump Jr. began being publicly linked to Bettina Anderson.
Trump subsequently nominated Guilfoyle to Greece.
The appointment was widely viewed as a prestigious landing spot for a longtime ally after her relationship with Don Jr. ended.
Now even that connection to the administration is gone.
That makes the alleged “burn book” narrative irresistible politically.
A former intimate partner of the president’s son.
A longtime MAGA insider.
A newly ousted ambassador.
And, according to anonymous sources, years of notes about what she saw behind closed doors.
But until Guilfoyle herself confirms the diary or material from it becomes public, the most sensational claims require caution.
What can be established is already dramatic enough.
She went from Trump-family insider to ambassador.
Then reports of alleged misconduct piled up.
The State Department watchdog opened an investigation.
Trump publicly expressed displeasure.
The White House asked her to resign.
And less than a day later, new reports emerged claiming some of the same people who wanted her gone are now nervous about what she might say next.
For Trump’s political operation, that may be the uncomfortable irony.
The administration has successfully removed Guilfoyle from Athens.
It may have much less control over what she does once she comes home.
