Mary Trump is escalating her criticism of President Donald Trump and his relationship with aide Natalie Harp, describing her uncle as a "pathetic, frail, needy old man" and alleging that the 35-year-old former television anchor has become a constant presence whose role includes reinforcing the president with flattering information.

The president's 61-year-old niece made the remarks during a television interview following new reporting about Harp's unusually personal communications with Trump. Mary Trump portrayed the relationship as evidence of what she considers a broader deterioration surrounding the president, while offering no independent evidence that Harp's responsibilities are designed to manage his psychological state.

Her comments followed reporting by The Daily Beast about two letters Harp allegedly sent Trump. According to the report, Harp referred to the president as her "Guardian and Protector" and wrote that he was all that mattered to her and that she never wanted to disappoint him.

Mary Trump argued that Harp's proximity to the president raises questions about the information reaching him and the influence wielded by people within his immediate circle. She alleged that Harp supplies Trump with favorable-and sometimes fictional-news coverage intended to protect his ego.

Those assertions are Mary Trump's characterization of the relationship, rather than an established account of Harp's official duties. The supplied reports don't provide evidence demonstrating that the White House assigned Harp to shield Trump from negative information or that the president depends on her in the manner his niece described.

Mary Trump went further, arguing that the arrangement represents what she considers a "national security threat." She portrayed her uncle as vulnerable to people around him and suggested Harp herself "clearly needs help," an assessment that reflects Mary Trump's opinion rather than a medical or security determination.

Harp's intense public loyalty to Trump predates her current White House role. A former anchor at One America News Network, she became known within Trump's political orbit for personal testimonials describing what she believed the president had done for her.

In a since-deleted 2019 social-media post, Harp compared Trump to the biblical Good Samaritan. She described herself as a forgotten person who had been left to die from cancer and medical error before, in her telling, Trump's policies helped save her.

Her political advocacy became particularly visible on Jan. 6, 2021. CNN reporter Isabel Chapman recently reported on CNN News Central that Harp posted more than 150 times that day as Trump's supporters gathered in Washington and the U.S. Capitol was subsequently breached.

According to CNN's account, Harp's posts echoed Trump's unsupported allegations that the 2020 presidential election had been stolen. She praised participants as patriots and posted messages encouraging people to fight for Trump and "stop the steal."

Harp's efforts to establish herself within Trump's political organization have also drawn comments from former administration officials. Sarah Matthews, a former White House deputy press secretary who resigned on Jan. 6, recently discussed her interactions with Harp during an appearance on the MeidasTouch podcast.

Matthews said Harp was among a group of campaign surrogates who appeared at political events and produced opinion pieces supporting Trump. Although the two women hadn't met personally, Matthews said Harp repeatedly contacted her through direct messages on social media.

Matthews interpreted those messages as an attempt by Harp to ingratiate herself with people who had influence inside Trump's campaign. She said she no longer has access to the exchanges because Harp blocked her after Matthews resigned from the administration.