by Alex Ingram in Entertainment

Actress Michelle Trachtenberg, known for her roles in "Gossip Girl" and "Buffy the Vampire Slayer," has died at the age of 36. Her mother discovered her unresponsive in her Manhattan apartment. Law enforcement sources suggest her death may be related to complications from a liver transplant she received within the last year. Trachtenberg was reportedly active just days before her death, seen out with friends. Tributes have poured in from fellow actors, including Blake Lively and James Marsters, who praised her talent and positive energy. The news has shocked fans and the entertainment community.