M any were shocked to learn about the death of Michelle Trachtenberg. The beloved actress, who made a name for herself on shows like Buffy the Vampire Slayer and Gossip Girl, died

Michelle Trachtenberg is being remembered for the positive energy she brought to set by many of the stars she worked with over the years ... after her death was announced today.

Rosie O’Donnell, who starred alongside Trachtenberg in Harriet the Spy, told People she “loved her very much. She struggled the last few years. I wish I could have helped. J