Rosie O’Donnell shares new details about Michelle Trachtenberg’s death

Rosie O’Donnell claims Michelle Trachtenberg struggled with addiction before her death, calling the loss of her “Harriet the Spy” co-star a “tragedy.”

“In the last few years, when she was in pretty bad shape, she would call me and we would talk,” the former talk show host told Variety in an interview published Thursday.

“I also called her mother to find out what was going on, and her mother told me what was happening, and how long it had been happening,” she continued.

“We were supposed to see each other three or four times, and she just never showed up — sometimes at restaurants, other times at my house where we’d had someone prepare the whole meal. I would call her and go, ‘Honey, are you heading over?’ and she’d go, ‘Was that today?’ She was not in good shape.”

The talk show icon also said she wished she “could have done more” for Trachtenberg. “I tried to help her as much as I could, but she was inaccessible toward the end, and it was tragic.”

The “View” alum, 64, further shared that Trachtenberg — who died in February 2025 at the age of 39 — “was a real genius child who was able to memorize anything, pick up her lines, you could improvise with her, and she was connected and right there.”

“She was so close to her mother, Lana, and her sister, who’s a ballerina,” the “Sleepless in Seattle” actress recalled.

O’Donnell said they were “a very loving family” before the “Gossip Girl” actress allegedly “got into drugs and alcohol, I believe” and she “lost touch with her.”

The “Flintstones” star confessed that she “didn’t think that [Trachtenberg] would die.”

“With most people suffering from addiction, their loved ones think that they’ll survive it, but you can die from your addiction to drugs or alcohol, and it happens too often that it must be taken seriously,” she noted.

A rep for the late “Ice Princess” star did not immediately respond to Page Six’s request for comment.

Trachtenberg died of complications from diabetes mellitus on Feb. 26, 2025. Prior to her death, she had undergone a liver transplant.

Page Six learned that less than a week before her death, Trachtenberg seemed to be “in very bad shape” while stepping out at Italian restaurant Sartiano’s with pals, where she was said to have appeared “frail” and could hardly “walk down the stairs.”

After fans expressed concern over a January 2024 Instagram photo, however, Trachtenberg claimed to be “healthy and happy” in an online retort.

“I’ve received several comments recently about my appearance,” she captioned a snapshot at the time.

“I have never had plastic surgery I am happy and healthy. Check yourself haters.”