Mary Trump, the president’s niece whose tell-all book has roiled the Trump family, is suing the commander-in-chief and his siblings, accusing the trio of committing fraud in an attempt to deprive her of millions of dollars associated with the family’s real estate empire.

The lawsuit, filed Thursday in a New York court, names Donald Trump, his sister Maryanne Trump Barry, and their late brother Robert Trump, in the alleged fraud and civil conspiracy.

In her memoir released earlier this year, Mary Trump, 55, wrote that, for the Trumps, “fraud was not just the family business—it was a way of life.”

“Rather than protect Mary’s interests, they designed and carried out a complex scheme to siphon funds away from her interests, conceal their grift, and deceive her about the true value of what she had inherited,” the lawsuit, first reported by The New York Times Thursday, says.