Although Melania Trump has been criticized by outsiders during her time in the White House, one of her biggest struggles was her relationship with President Donald Trump's eldest daughter, Ivanka Trump, according to a former aide.

During an appearance on the Daily Beast podcast, “The New Abnormal with Molly Jong-Fast & Rick Wilson,” Stephanie Winston Wolkoff, who served as former senior advisor to the first lady, shared details about the alleged Melania-Ivanka feud.

Wolkoff gained attention in September for her tell-all book, “Melania and Me: The Rise and Fall of My Friendship with the First Lady.” The book revealed embarrassing details about Melania and touched on the strained relationship with Ivanka. The book included something called, "Operation Block Ivanka," which was an effort to deny Ivanka the spotlight at the 2017 presidential inauguration. Melania also referred to Ivanka as "princess."

In the podcast, Wolkoff said that "the princess wanted to render Melania irrelevant."

Wolkoff claimed Ivanka had a habit of overstepping boundaries and poached people who Melania wanted on her team, like current White House Press Secretary Kayleigh McEnany.

When Jong-Fast asked if Ivanka made certain decisions because she was either “dumb” or “evil,” the author suggested a different conclusion.

“I think it’s a mixture. I really do. I think that Ivanka is Donald in a suit, right? All of the Trumps are taught to be Trumps. They don’t show emotion. A Trump is a Trump because they are authentically and unapologetically skin deep, and also self-serving,” Wolkoff said.

“And their attitudes and disrespect for each other is again, you have to get any inside to see it,” Wolkoff added.

Wolkoff also claimed Melania referred to Ivanka and her husband, Jared Kushner, as “snakes,” who would do anything to get what they wanted. 

Melania also reportedly had an issue with the way Jared and Ivanka were placed in executive positions at the White House despite their lack of experience.

“What was particularly galling, not only to us, but also to Melania, was that Ivanka and Jared were no more qualified to be engaged in any governing of the country than she was. Not that any of us that had never held those positions” Wolkoff said.

After Wolkoff’s book was released just two months before the election, Melania’s spokesperson released a statement distancing the first lady from her former confidante and discrediting the contents.

“This book is not only wildly self-aggrandizing, it’s just not truthful,” Stephanie Grisham, the FLOTUS’ chief of staff, told USA Today in an email.

“It is an exercise in bizarre twisting of the truth and misguided blame for the sake of self-pity. It’s unfortunate and concerning that she’s overstated their friendship and her very brief role in the White House to this degree.”

In October, the Department of Justice sued Wolkoff to recoup the profits from the book for violating a nondisclosure agreement. Wolkoff's attorney called the lawsuit "entirely meritless."

Ivanka and Melania Trump Ivanka Trump and Melania Trump watch as President Donald Trump speaks in the Oval Office of the White House, in Washington, D.C., Feb. 28, 2017. Photo: REUTERS/Joshua Roberts