Whenever we spoke, there was something medically wrong,” the pal said of the “Gossip Girl” star’s health “curveballs.”

More details about Michelle Trachtenberg's final days continue to emerge, with a former colleague sharing her plans before her tragic passing.

Before her death at 39, Michelle Trachtenberg wrote a screenplay titled, 'Toy Monster.' Producer Casey Tebo exclusively tells PEOPLE that studio executives struggled to see the late actress for anything beyond her iconic television roles,

Michelle Trachtenberg was found in her New York City apartment, and the death is not believed to be suspicious, police said.

Academy Awards took place Sunday in Los Angeles, where several late movie stars were remembered by their grieving peers.

Michelle Trachtenberg's cause of death was ruled "undetermined" by the Office of Chief Medical Examiner in New York City, Fox News Digital confirmed.

Michelle Trachtenberg, born on Oct. 11, 1985, was a Manhattan-born actress who started her career on Nickelodeon at only three years old. Trachtenberg went on to make a name for herself in movies

Discover how Michelle Trachtenberg's words about Princess Eugenie have taken on a new meaning following the Gossip Girl star's tragic

Michelle Trachtenberg had written an 'incredible' screenplay based on Jerry Oppenheim's 'Toy Monster,' according to producer Casey Tebo, but he says studios overlooked the star's talent for writing.

Police told the Post that Trachtenberg was found "unconscious and unresponsive" by police and was pronounced dead by EMS workers. Her death is not being treated as suspicious, police sources told the outlet,

New York City native and "Gossip Girl" and "Buffy the Vampire Slayer" actress Michelle Trachtenberg has died at 39.

Michelle Trachtenberg was embarking on a new path as a screenwriter before her death at the age of 39. The actress was on the verge of closing a deal on a screenplay she'd written based on the book Toy Monster: The Big,