Rhona Graff, President Donald Trump’s longtime personal secretary, is now on the long list of Trump associates congressional investigators want to speak with as they dig into Russia’s interference in the 2016 election.

ABC News reported Friday that investigators intend to question Graff, a 30-year veteran of the Trump Organization and gatekeeper to all those who’ve wanted to reach Trump over the years.

Of particular interest to them is any information she may have about a June 2016 meeting at Trump Tower that had been billed as part of the Russian government’s efforts to help the Trump campaign, according to ABC.

In an email chain setting up the meeting, Trump family acquaintance Rob Goldstone,a British music publicist, suggested sending damaging information about Hillary Clinton to Graff directly, indicating just how crucial a conduit she was to Trump.

“I can also send this info to your father via Rhona,” Goldstone wrote to Donald Trump, Jr., “but it is ultra sensitive so wanted to send to you first.”

Then-campaign chairman Paul Manafort and Trump’s adviser and son-in-law, Jared Kushner, were copied on the email chain; Graff was not. Congressional investigators are likely keen to find out what she knew about the meeting and what she saw happening that day around Trump Tower.

Alan Futerfas, an outside lawyer representing the Trump Organization and its staffers, told ABC that Graff has not yet been contacted or asked for records. He said the team would “continue to cooperate with any Committee seeking information.”

A number of lawmakers, including House Intelligence Committee vice-chairman Adam Schiff (D-CA), have said they intend to bring Graff in for questioning.

“We’re going to want to hear from everyone connected to this,” Schiff said on July 11. “We’re also going to want to see, as referenced in that email, whether the President’s assistant received any communications from the Russians as well. That was another channel alluded to in those emails.”