Watch: Kate Middleton and Jessie J Have Emotional Moment After Bonding Over Cancer JourneysTatiana Schlossberg is bravely fighting a difficult health battle. The 35-year-old daughter of Caroline Kennedy and Edwin Schlossberg shared that she has been diagnosed with acute myeloid leukemia, a rare blood cancer, with doctors giving her a terminal prognosis. In an essay for The New Yorker published Nov.