"We've had a lot of support from the soldiers," she said.
She treasures Anzac Day - but she also dreads it.
"Always Anzac Day is difficult," she said. "You build up to those things. You hope, when your child dies, that nobody else has to go through that pain.
"I'm very concerned about Anzac Day, because I think it's part of who we are as a country, and it's under threat. We have to really look, as a country, at how are we going to change, how are we going to allow Anzac Day to evolve?"
Returned and Services Association chief executive Dr Stephen Clarke said there were still about 40,000 Kiwi veterans who had served overseas, including 10,000 to 12,000 World War II survivors and about 15,000 who served in Bosnia, Kosovo, Timor, the Solomon Islands, Afghanistan and the Middle East.
Mrs O'Donnell suggested children should be involved, and that Anzac Day services commemorate values seen in military service such as courage, commitment, camaraderie, compassion, selflessness and sacrifice.
"Those are the things that we need to draw out of the spirit of Anzac."
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* Watch the Auckland Domain Anzac Day dawn ceremony live on nzherald.co.nz tomorrow morning. Livestream courtesy of Maori TV.