The star, now dating The Hills star Brody Jenner, said she also wrote down her feelings in new songs to also cope with the sadness.
Speaking to Australia's TV Week magazine, she said, 'I've spent an incredible amount of time talking to my girlfriends.
'They were there for me. It did me really good to be able to tell them everything.
'It helped me come to terms with the things that had happened.'
She added, 'It also helped put my feelings down in paper.
'It was comforting.
'It's always been like that for me.
'When I was a kid, I had my diary to confide everything in.
'Now I write songs. It really was a form of healing.'