“It’s not my cello,” Rosie O’Donnell said over a video call, sitting on a gray love seat in a gray hoodie and a pair of chic brown glasses.

In New York, it was a Thursday morning. In Dublin, where the actress, comedian and former talk show host has been staying since mid-January, afternoon light streamed through a nearby window. The cello came with the rental.

Lots of celebrities talked during the 2016, 2020 and 2024 elections about moving abroad if Donald J. Trump won — among them, Barbra Streisand, Cher, and Amy Schumer.

Ms. O’Donnell actually went through with it.

“I never thought he would win again,” she said of President Trump, bringing up the television clips she watched last year of Kamala Harris, then the vice president, appearing at packed arenas in Pennsylvania and Michigan. “But I said, ‘If he does, I’m going to move,’ and my therapist said, ‘Well, let’s make a real plan.’”

It so happens that Ms. O’Donnell had reservations about discussing all this with a reporter.

Her application for Irish citizenship has not yet been approved and she is worried about doing anything to jeopardize that. Technically, she and her youngest child, Clay, who is autistic and nonbinary, are still just visiting the country.