Part of her fathers statement after court today is ripping my heart out, I cannot even begin to comprehend the level of their pain.
Mr Buckley said the family are haunted by her final moments.
He said: "Our hearts are broken at the thought of Karen’s final moments on this world. The thought of her being alone, frightened and struggling for her life haunts us.
"The panic and fear she experienced as she fought for her very survival, but she had no chance against that coward.
"The last face she saw and the last voice she heard was of that cold blooded cowardly murderer, who calmly set about trying to dispose of her body so she would never be found.
"Only for the swift action of the police and the people of Glasgow we were able to find Karen and bring her home and give her a dignified burial.
"Not only did he rob Karen of her precious life and future but he robbed us of our beautiful daughter/sister. He also robbed us of Karen in death as we never got to see her, hold her or kiss her good bye."
"All Karen was doing was making her way home when she was randomly targeted and murdered by a cowardly vicious criminal. No words of ours can do justice to our feelings towards him. He is truly evil and we hope that he will spend the rest of his life behind bars."