Trachtenberg was discovered "unconscious and unresponsive" in her apartment earlier this year, and while no autopsy was conducted due to her family's religious beliefs, toxicology tests revealed the cause of death. Known for portraying Dawn Summers in Buffy the Vampire Slayer and the cunning Georgina Sparks in Gossip Girl, Trachtenberg's acting career began with Nickelodeon projects, establishing her as a prominent childhood star.

Reports suggest that she had undergone a liver transplant prior to her untimely demise, although specifics regarding the surgery remain unclear. Her passing has sparked tributes from fellow actors, including Blake Lively, who reflected on Trachtenberg's vibrant spirit, calling her "big and bold" in social media posts. Trachtenberg leaves behind a legacy of memorable performances, and her sudden death has left fans in shock.