Rosie O’Donnell claims Harriet the Spy co-star Michelle Trachtenberg ‘struggled’ before her death

Trachtenberg was found dead in her New York City apartment

Rosie O’Donnell has claimed that her former co-star Michelle Trachtenberg was “struggling” before her death.

The 62-year-old issued a statement about Trachtenberg on Wednesday, hours after the 39-year-old was found dead in her New York City apartment. O’Donnell acknowledged how “heartbreaking” it was to hear about the passing of the Gossip Girl alum.

“I loved her very much. She struggled the last few years. I wish I could have helped,” she added in her statement, shared with The Independent.

O’Donnell worked with Trachtenberg on the 1996 Nickelodeon movie, Harriet the Spy. In the film, which was one of Trachtenberg's first acting roles, she played a sixth-grader who aspired to be a writer and a spy, while O’Donnell played her character’s nanny.

The New York Post was the first to report Trachtenberg’s death on Wednesday, noting that the police responded to a 911 call just after 8 a.m. that day at One Columbus Place, a 51-story luxury apartment complex on Central Park South.

The NYPD confirmed they found Trachtenberg “unconscious and unresponsive” and she was pronounced dead by emergency medical workers. Her cause of death has not yet been determined, but police are not investigating it as suspicious.

Rosie O’Donnell first worked with Michelle Trachtenberg on the 1996 film, ‘Harriet the Spy’ (Getty Images)

According to the Post, she recently underwent a liver transplant.

Following her role in Harriet the Spy, Trachtenberg continued her career as a child actor, securing another break-out role as Dawn Summers in the hit series Buffy the Vampire Slayer. She remained on the show until it ended in 2003.

She also played the lead role in Disney’s 2005 comedy sports drama film Ice Princess as Casey Carlyle, before taking on her signature role as antagonist Georgina Sparks on the CW TV show Gossip Girl, which ran 2007 to 2012, and Trachtenberg returned to the part for appearances in two episodes of Max’s Gossip Girl revival.

There were concerns about the actor’s health and wellbeing that had been raised by fans previously. A series of photos on her Instagram page last year prompted some to speculate about her apparent weight-loss and somewhat gaunt appearance.

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However, in January 2024 she responded to fan concerns saying she was “happy and healthy” and had never had plastic surgery.

“Explain to me how I look sick,” she wrote. “Did you lose a calendar and not realize I’m not 14. I’m 38. How sad for you to leave such a comment.”

Along with O’Donnell, many of Trachtenberg’s friends and former colleagues have issued tributes. Her former Gossip Girl co-star Ed Westwick, wrote on Instagram: “So sad to hear of the passing of [Michelle Trachtenberg]. Sending prayers.”

Saturday Night Live star Kenan Thompson also wrote on Instagram: “Our first Nick movie star has departed us!! She was my friend and now she rests!! Check on your people!!!”