"We last spoke 26 years ago, believe it or not," Denton began, "We talked about the panic attacks and the low self-esteem because of the relationship with your father."
Denton continued: "When you get that little voice that says 'Rebecca you're no good', what's the best way to deal with that?"
The Gold Logie winner then replied with some powerful advice: "I don't dwell on it so much anymore. I do take a deep breath and go 'I'm ok with me'."
Denton then flings a tough question at the Aussie silver screen star, asking why someone with such low self-esteem would be attracted to a career in front of the camera.
"I guess I didn't choose it, it chose me," Rebecca replies with a sense of authenticity that is refreshing to see.
"I pursued it because I didn't know what else to do. I dropped out of school when I was, you know, fifteen, sixteen. I didn't have any qualification's and then people kept employing me."
Gibney suffered a nervous breakdown in her early 30's and has addressed her difficult past before on social media.
Taking to Instagram Gibney shared a photo of herself and her sister as kids, in solidarity of a powerful interview by fellow actor Melissa George, who addressed her own history with domestic violence.
"This is a happy snap of my sister Stella and me when we were kids. No one would know that we were being raised in a family of domestic violence. Last night on the Sunday program fellow actor Melissa George talked about being attacked by her former partner."
Gibney continued: "I grew up in a household where violence toward our mother was a common occurrence.
"Domestic violence is wrong - violence in any form is wrong."
Rebecca has a 15-year-old son with husband Richard Bell.