Hicks, 29, began working for Trump before he announced his candidacy and has been a constant at his side over the past three years, managing his public image and advising him on policy and other matters. Hicks was very much in the former category.
"She was his last emotional crutch", the source told CNN of their relationship. Mr. Trump said he will "miss having her by my side".
A former Trump campaign aide who has spoken with the special counsel's office said Robert Mueller's team asked about comments made by Hope Hicks during the ex-aide's session with investigators.
Before joining the Trump campaign in 2015, Hicks had no political experience, so it's anyone's guess where she'll go next and how she'll draw on her White House background.
Friends and colleagues who had spoken with Raffel cited family responsibilities back in NY as the reason he was departing the often-tumultuous Trump White House.
"She is as smart and thoughtful as they come, a truly great person", Trump said in a statement released by the White House.
"Her boyfriend's gone, now she's testifying", he said, referring to the resignation of aide Rob Porter amid allegations of domestic abuse, and her testimony in special counsel Robert Mueller's Russian Federation probe.
One terrorist killed in Kashmir encounter
Unknown number of militants holed up in Hajin area are believed to be still engaged in gunfire with the security forces. Arms and ammunition, including AK 47 rifles, and other incriminating materials were recovered from the encounter site.
"Her departure is to be determined but it will be sometime in the next few weeks", it said.
Hicks added that she has been truthful when discussing matters related to potential collusion between the Trump campaign and Russian Federation. One person said Hicks had been increasingly feeling the stress of the position.
Press Secretary Sarah Sanders tweeted that Hicks was "in a league of her own" and no one could fill her shoes. Her family was friends with the Trumps, and she was once a model for Ralph Lauren.
She said nine: "Hi".
Hope Hicks speaks during a "Thank You Tour 2016" rally on December 2016 in Mobile, Alabama. In a statement, she lavished praise on her boss, President Donald Trump. She defended him when charges of domestic abuse against his two former wives emerged.
Hicks helped craft a statement about the nature of the meeting that turned out to be misleading. Now we learn (coincidence?) from a New York Times report that longtime confidante Hope Hicks is leaving the White House. "This is something that she's been thinking about for a while". In that testimony, Hicks acknowledged that she sometimes told white lies for Trump but insisted that she had never done so in regard to the Russian Federation investigation.
As the relief from her impending departure washes over her, others in the West Wing likely feel the opposite.