'It's wonderful, but it makes me sad too,' the actress told ET of the bittersweet reunion.
Mary Tyler Moore spent her last moments on camera surrounded by friends.
The TV icon, who died after going into cardiopulmonary arrest on Wednesday, made her last TV appearance on a 2013 episode of Hot in Cleveland, featuring an epic reunion with her former Mary Tyler Moore Show co-stars, Valerie Harper, Betty White, Cloris Leachman and Georgia Engel.
WATCH: Mary Tyler Moore Dies at 80
The gang reunited to play White's character Elka's old bowling team, sharing a scene where they reflected on old times.
Watch below:
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ET last spoke with Moore at the press conference for the special episode of the TV Land comedy. Decades after she first captured hearts on The Dick Van Dyke Show, and later The Mary Tyler Moore Show, Moore said that reuniting with her co-stars made her a little "sad."
"It's wonderful, but it makes me sad too. It makes me feel, well, why don't I have this in my current life? Where are all these friends, buddies, and co-workers, and people who loved each other? Why can't they be around? Or maybe they can," she said, though noting that she's usually a "very happy person."
"My husband has always been very good at getting me out of myself when I get down and depressed and all of that -- never seriously," she confessed. "So, I am basically a very happy person."
She also opened up about her career as an actress.
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"My mother and father were very funny, witty, sharp people. I never dreamed that I would be able to be doing that as my life's work. I wanted to be a dancer, and I failed," she explained.
"I just wasn't good enough, so I had to become an actress, and I would go to various auditions. People would say, 'You should do some of this yourself,' and I was like, 'No, not me. I'm not an actress, I'm a dancer,'" she shared, noting that eventually "it did seep its way through to my core that I was good at comedy."
Moore's friends and former co-stars, including Ed Asner, took to social media on Wednesday to pay tribute to the TV legend.
See more in the video below.