The late actress was best known for her roles as Georgina Sparks on the CW series and Dawn Summers on Buffy the Vampire ...
Rosie O’Donnell, who starred alongside Trachtenberg in the starlet’s first movie, the Nickelodeon-produced 1996 film ...
The "Gossip Girl" and "Buffy the Vampire Slayer" actress was found unconscious and unresponsive in her New York City ...