Nicole Kidman is still grieving the loss of her father.

The 48-year-old actress, who has two daughters, Sunday Rose, seven and four-year-old Faith, with husband Keith Urban, was devastated when psychologist and biochemist Dr. Antony Kidman died suddenly last September and admits she still feels very raw.

Asked about their close relationship, the 'Paddington' star said: ''You've caught me at a time when I'm still recovering and in grief. There are times you go, 'Gosh, I wish I could just go and hide in a hole and never come out.' And then you go, 'That was yesterday.'''

Nicole credits her young daughters for helping her to get over his death and focus on the present.

She told the August issue of US Vogue magazine: ''Just hearing their laugh . . . it's life in its most powerful form.''

Nicole cherishes her own childhood memories of her father and vividly remembers him bringing mice to her school to talk about science.

She said: ''And all the kids are looking at me like I am crazy.''

The actress previously admitted that the ''massive tragedy'' had a big effect on her.

She said: ''Personally [it's been] really really really hard. My family underwent a massive tragedy. So not the best year. But I try not to be ungrateful - I'm grateful to be alive.''