Dolly has been remembered by millions as the face of Akubra hats when she was a child.
"It rips your guts out when you get this sort of news, that this bullying is that out of control now with this social media and those bloody phones", he said.
"Unfortunately, Dolly will never know the grain pain and emptiness left behind".
Earlier this week, Dolly's devastated father, Tick, from Katherine in the Northern Territory, described the harassment his daughter had endured as "evil" and invited those who had bullied his daughter to her funeral service.
Mr Everett concluded the post by calling for more awareness over online bullying, urging bullies to come to his daughter's funeral so they could "witness the complete devastation you have created".
He did not go into detail about the bullying that his teen daughter endured. "You will never know what have untill it's gone".
A memorial for Dolly will be held on Friday in the close-knit pastoral community of Katherine where she grew up. If it's an emergency, call 000.
Dolly was the face of Akubra Hats as a child. People are being asked to wear blue, Dolly's favourite colour.
Cannabis shops say Day One was great, but official numbers are nonexistent
The state has not yet issued a retail permit for a store in Los Angeles , which plans to issue local licenses in the coming weeks. We just got our state license on Saturday ... so immediately there was extra energy in everyone's step".
Firstly, we would like to thank the whole community for the overwhelming response we have received since our world came crashing down around us when our lovely Dolly left our family.
"At this point it's devastating and shattering that a young life with so much potential is now lost forever, but in that we have to see hope and the seed for change", they said.
In the statement Mr Turnbull notes that the federal government has established the office of the eSafety Commissioner in order to tackle cyber-bullying and work with internet companies to promote safety online.
Iconic hat company Akubra posted its own message of support along with a photograph taken of Dolly eight years ago in its annual Christmas campaign.The company wrote: "To think that anyone could feel so overwhelmed and that is their only option is unfathomable".
Instead of sending flowers, people are asked to donate to the anti-bullying charity the family has launched, called Dolly's Dream. "Be a friend, check up on your mates". I hope from such a loss that there will be many who recognise the impact their words can have and take a fresh approach in their interaction with others.
"My thoughts are with you and your family. Sending love and strength", Jaz Smith wrote.
Dolly (r), pictured with her sister Meg, mother Kate and father Tick. "Xxoo She is a attractive girl gone far too soon", JjLamb said. The Australian Institute of Family Studies says about 10 percent to 20 percent of children and young people have been cyberbullied. The photo has been shared more than 1400 times.