The ex-treasurer for US congressman George Santos pleaded guilty Thursday to a fraud conspiracy charge and implicated the indicted New York Republican in a scheme to embellish his campaign finance reports with a fake loan and fake donors. Nancy Marks, who was a close aide to Santos during his two congressional bids, entered the plea at a federal courthouse on Long Island, where she was a longtime political operative and bookkeeper for multiple candidates. Speaking to the judge, Marks said that among other things, she and Santos had submitted bogus campaign finance reports falsely saying he had loaned his campaign $500,000 – even though in reality he did not have that kind of money and the loan did not exist. She said the purpose of the fake loan was to make it look as if he was richer than he really was, which might attract other donors, including a Republican committee. Reading from a prepared statement, Marks also said she had provided the Federal Elections Commission (FEC) with a fake list of people who had supposedly given money to the campaign. “The donors, who are real people, didn’t give me permission to use their names,” Marks said in court. Her plea agreement comes with a recommendation that she serve three and a half to four years in prison. Outside the courthouse, Marks’s lawyer said that while his client had not formally entered into a cooperation agreement with prosecutors, she would be willing to testify against him if asked. “If we get a subpoena we’ll do the right thing,” said the attorney, Ray Perini. He said Santos had “mentally seduced” his client. “There’s a manipulation involved that had to do with her family and the death of her husband,” Perini said, declining to elaborate. “There were lies told.” Any such testimony could be a severe blow to the congressman, who faces separate charges that he embezzled money from his campaign, lied in financial disclosures submitted to Congress and received unemployment funds when he wasn’t eligible. An attorney for Santos, Joseph Murray, attended the court hearing and said afterward that he expected Marks was cooperating with the government. A congressional spokesperson for Santos declined to comment. Marks resigned as Santos’s treasurer amid growing questions about his campaign finances and revelations that the Republican had fabricated much of his life story. After his election, news reporters revealed that Santos had made up stories about where he went to college and where he worked, telling people he was a Wall Street dealmaker with a real estate portfolio when he was actually struggling financially had had faced eviction from multiple apartments. Santos also lied about his heritage, saying he was Jewish, when he wasn’t. Santos has acknowledged embellishing his resume but has accused people of overreacting. Santos faces a 13-count federal indictment centered on charges of money laundering and lying to Congress about his wealth in a financial disclosure. Marks had not previously been charged. Thursday marked her first appearance in court.