3.2M views · 29K reactions | Michelle Trachtenberg, known for her roles in ‘Buffy the Vampire Slayer’ and ‘Gossip Girl,’ has died at the age of 39, ET can confirm.⁠ She was found unresponsive in her New York City apartment on Wednesday morning. Her death is not being treated as suspicious and ⁠she is believed to have died of natural causes. The Medical Examiner will determine her cause of death following an autopsy. | Entertainment Tonight | Facebook