"We've had some terrible things happen this year in our family," Nicole told Good Morning Britain. "We will be still holding tight to each other as that's all you can do at Christmas, hold tight to each other."
Nicole's father passed away in Singapore where he was visiting his younger daughter Antonia
During the interview 47-year-old Nicole, who is currently promoting her new film Paddington, also spoke about how she keeps her marriage fresh.
"We work really hard to keep our relationship alive and to keep it incredibly deep and intimate," said Nicole of her eight-year marriage to musician Keith Urban. "That's from meeting in later life and coming together at a particular time that was serendipitous.
"There's incredible possibility for love in the latter years," she added. "I sound like some old woman, a grandmother! Anyway it's good, I'm grateful."
Nicole and her husband Keith at the Paddington premiere on Sunday
Hawaii-born Nicole, who grew up in Australia and now lives in Nashville, also revealed a somewhat surprising domestic activity which she enjoys.
"I love washing clothes," she said. "Everyone's like 'are you joking?' I love watching the dirty water coming out, I sound do OCD but I love seeing them get clean."
While Nicole admitted a love of laundry, however, she said that there are some chores she's less keen on.
"I don't do the ironing," she said. "Even though as a kid that was my number one chore at home... I'm not a cook [either], I love to be cooked for but I'm not very good."