Leavitt, 28, just recently returned to the White House after taking a brief leave for the birth of her second child in May.

Leavitt, who served Trump as a press aide during his first go-around in the White House, has been one of the most visible advocates of Trump’s “Make America Great Again” movement. The Republican president described her as one of his “most trusted aides” in a social media post announcing her departure.

He said Leavitt “will be departing her role at the end of the month so she can spend more time with her beautiful young children and family, a decision I totally understand and respect! Karoline will now be one of my top outside advisors, and an influential voice within the Republican Party, as we work to defy History, and conclusively win the Midterm Elections.”

Leavitt recently returned to work after taking leave following the birth of her second child, a daughter, in May. She also has a two-year-old son.

“The truth is since returning to the White House after the birth of my daughter, I have felt in my heart that I cannot be the best mom my two young children deserve while devoting the constant time, energy, and attention required of the White House Press Secretary — and that is why I have ultimately made the bittersweet decision to depart the White House and embark on a new chapter in my life,” Leavitt said in a social media post.

Trump did not outline plans for who might replace her in the high-profile role.