"President Donald Trump’s longtime executive assistant, Madeleine Westerhout, abruptly resigned from the White House on Thursday, after coming under scrutiny for sharing intimate details about the president’s family with reporters, according to two sources familiar with the move.
In the past six months, Westerhout had tried to expand the boundaries of her job to encompass a broader set of tasks and to include foreign travel, said one adviser close to the White House, who suggested Westerhout had tried to act like a de facto chief of staff. This irked several White House officials and Cabinet secretaries who thought she should stick to her primary task of serving as the president’s personal secretary with a desk just outside the Oval Office..."
https://www.politico.com/story/2019/08/29/trump-madeleine-westerhout-white-house-1478767