Speaking with Barbara Walters for an episode of ABC's 20/20, which airs Wednesday at 10 p.m. ET, Irwin reveals that she learned of her husband's death in a phone call from her brother-in-law. "I remember thinking, 'Don't say it. Don't say it. Don't say it,' " she tells Walters. "I looked out the window and (daughter) Bindi was skipping, skipping along outside the window. And I thought, 'Oh, my children.' He wouldn't have wanted to leave the children."
Irwin says she has not seen footage of the stingray attack, nor does she want anyone to see it. Asked if it might ever be shown on TV, she replies, "Oh, it won't be. No. No. What purpose would that serve?"
John Stainton, Steve's longtime business partner and friend, who was with him on the day he died, adds: "It should never be aired. It's just a horrible piece of film tape."
In the three weeks since Steve's death, Terri Irwin says she's been living "one minute at a time, sometimes an hour at a time, with great faith, great determination."
Her children – Bindi, 8, and Robert, almost 2 – are her priority, she says, although she's also coming to terms with her own grief. "I'm really trying," she says. "I've lost my prince."
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Bindi, who is following in her father's footsteps with a series being developed for the Discovery Network called Bindi the Jungle Girl, was inconsolable at first, Irwin says.
"She cried and cried and cried. And I said, We're still a family. Daddy still loves you. And we have to stay together and get each other through this. We can understand the grief, and we can live with the grief. But we will not be victims of this grief. We will be wildlife warriors like Steve Irwin."