Kate's death is not being treated as suspicious.
In her Australian idol audition, the star spoke about her mother's death when she took her life in 2000.
She spoke about her mother's death when she revealed the song she wrote was dedicated to her.
'When I lost my mum I went mustering up north, and that's when I wrote the song - I usually keep my emotions all inside, but writing songs helps me get it out in the open.'
Country music star Casey Barnes was one of the first to post a tribute to Kate's death. 'Absolutely devastated to hear of your passing today Cookie. This is the Kate Cook I remembered and loved,' she wrote.
'We were only just talking about trying to organise a ten year Idol reunion later this year... you were a breath of fresh air and such a beautiful person inside and out.
'Hope you're up there with your mum now mate. Love ya.'
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