Mary Trump, President Donald Trump’s niece, filed a lawsuit Thursday accusing the President and his siblings of committing fraud in order to deprive her of her interests in the family real-estate empire built by Fred Trump Sr.

In the lawsuit, filed in New York state court against the President, his sister Maryanne Trump Barry and the estate of their late brother Robert Trump, Mary Trump asserts that for the Trumps, “fraud was not just the family business—it was a way of life.”

The lawsuit accuses her two uncles and her aunt, a retired federal judge, of conspiring amongst themselves and with several other parties, including a trustee appointed to act on Mary’s behalf, to give her “a stack of fraudulent valuations” and force her to sign a settlement agreement that “fleeced her of tens of millions of dollars or more.”

The allegations mirror the charges Mary Trump leveled against her family members in her best-seller “Too Much and Never Enough: How My Family Created the World’s Most Dangerous Man.”

“They concocted scheme after scheme to cheat on their taxes, swindle their business partners, and jack up rents on their low-income tenants” before targeting the teenage Mary Trump after the death of her father, Fred Trump Jr., the suit contends.

Mary Trump also claimed that her uncles’ machinations accelerated after the death of the president’s father, Fred Trump Sr., in 1999.

The trio presented Mary Trump, who inherited minority interests in various Trump businesses, “with a stack of fraudulent valuations and a so-called settlement agreement, and forced her to sign. All told, they fleeced her of tens of millions of dollars or more,” the suit says.

“My father died when I was still a teenager, and my uncles Donald and Robert and aunt Maryanne were supposed to be protecting me as my trustees and fiduciaries. Recently, I learned that rather than protecting me, they instead betrayed me by working together in secret to steal from me, by telling lie after lie about the value of what I had inherited, and by conning me into giving everything away for a fraction of its true value,” she said in a statement Thursday. “I am bringing this case to hold them accountable and to recover what is rightfully mine.”

Mary Trump said she only discovered the truth in 2018, after an investigation into the family’s finances by The New York Times.

In addition to alleging the elder Trumps committed fraud, Mary Trump’s lawsuit accuses them of breaching their fiduciary duty and committing negligent misrepresentation.