Maria Shriver has expressed a poignant tribute to Tatiana Schlossberg, following the tragic passing of the young mother of two on Tuesday.

Tatiana Schlossberg, the daughter of Caroline Kennedy and Edwin Schlossberg, lost her battle with acute myeloid leukemia, as her family announced on Instagram.

In response to the heartbreaking news, Shriver, who is Tatiana’s first cousin once removed, shared her emotional struggle to comprehend Schlossberg’s death at just 35.

“Today, I come here to honor my dear Tatiana, who departed from us,” Shriver wrote, accompanying her words with cherished photos of Tatiana throughout the years. “I’m here to pay homage to her and to recognize her loving and supportive family, who rallied together, doing all they could to assist her.”

“I am heartbroken as I return to this space,” Shriver continued. “Tatiana cherished life deeply. She embraced every moment and fought fiercely to preserve it.”

Shriver praised Schlossberg as a great journalist, and noted that she was “valiant, strong, [and] courageous.”

She also had kind words for Kennedy, 68.

Shriver, 70, wrote, “My heart has always been with my cousin Caroline ever since we were little kids. My entire being is with her now. What a rock she has been.”

Shriver vowed to keep Tatiana’s memory alive with Tatiana’s two children that she shared with her husband, George Moran: son Eddie, 3, and daughter Josie, 1.

“Those of us left behind will make sure Eddie and Josie know what a beautiful, courageous spirit their mother was and will always be,” she shared. “She takes after her extraordinary mother, Caroline.”

“May we all hold Tatiana’s family in our collective embrace not just today, but in the days ahead, and may each of you who read this know how lucky you are to be alive right now,” she noted. “Please pause and honor your life. It truly is such a gift.”

Tatiana revealed she had been diagnosed with acute myeloid leukemia in an essay she wrote for the New Yorker that was published in November.

She shared that doctors found her disease in May 2024 after she gave birth to her daughter, but that she had no obvious symptoms beforehand.

Doctors gave her only one year to live.

She heartbreakingly detailed how Moran — whom she married in September 2017 — supported her through her health battle.

“George did everything for me that he possibly could,” she noted. “He talked to all the doctors and insurance people that I didn’t want to talk to; he slept on the floor of the hospital.”