“Our beautiful Tatiana passed away this morning. She will always be in our hearts,” the family wrote in a brief message signed by relatives including her parents and siblings.
Schlossberg revealed in November 2025 that she had been diagnosed with acute myeloid leukemia. In a deeply personal essay published in The New Yorker, she explained that doctors discovered the cancer while she was hospitalized after giving birth to her second child, a daughter. She and her husband, George Moran, who married in 2017, also share a young son.
“I did not — could not — believe that they were talking about me,” she wrote of hearing the diagnosis. At the time, she said she felt healthy and active, even swimming a mile while nine months pregnant. Her treatment plan included chemotherapy and a bone marrow transplant.
Throughout months of intensive medical care, Schlossberg leaned heavily on her family. She wrote with gratitude about the steady support of her parents and her siblings, Rose and Jack. Rose was a stem-cell match and donated cells for Schlossberg’s first transfusion, while her brother volunteered despite being only a partial match.
“My family has held my hand unflinchingly while I have suffered,” she wrote, adding that their quiet strength helped carry her through the hardest moments.
The illness also stirred painful reflections on her family’s long history of loss. Schlossberg’s mother was just five years old when her father, John F. Kennedy, was assassinated. Decades later, Caroline Kennedy lost her brother, John F. Kennedy Jr., in a plane crash. In her essay, Schlossberg said she felt deep sorrow about bringing more grief to her family.
She also spoke candidly about her anger toward her mother’s cousin, Robert F. Kennedy Jr., criticizing his role in health policy while she was undergoing treatment. Writing from her hospital bed, she described watching funding cuts to medical research and said one of the drugs that saved her life was under federal review.
Despite the fear and frustration, Schlossberg focused much of her writing on love — especially the love she felt for her husband and children. She described Moran traveling back and forth between home and hospital to care for their kids and bring her meals. “He is perfect,” she wrote, expressing heartbreak that she would not get to share more years with him.
Doctors eventually told her she might have only a year to live. Her first thought, she said, was of her children and whether they would remember her. She worried her daughter, born just before her diagnosis, might never truly know who she was.
Schlossberg was an accomplished writer and historian. She earned a bachelor’s degree from Yale University and a master’s degree in American history from the University of Oxford. Much of her work focused on environmental issues, and she had been planning new research on ocean conservation before becoming ill.
“My son knows that I am a writer and that I write about our planet,” she wrote, explaining that she wanted her children to remember her not only as someone who was sick, but as someone who cared deeply about the world.
In her final months, Schlossberg said she tried to live in the present with her family, even as memories and fears came and went. “Sometimes I trick myself into thinking I’ll remember this forever,” she wrote. “I will keep trying to remember.”
She is remembered as a devoted mother, a thoughtful writer, and a woman who faced illness with honesty, courage, and love.
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