The father of the slain Gabriela Kabrins Alban, Howdy Kabrins, has highlighted in the Western Cape High Court how women's voices were being silenced through violence.
Testifying in aggravation of sentence during Diego Novella's trial on Wednesday, he said he was not only fighting for his daughter, News24 reported.
He has experienced endless sleepless nights of being haunted by images of his daughter, but has attended every day of her killer's trial.
"I will turn over every stone. I will walk across the sun to get justice for Gaby," he said.
"This is an example of women around the world being murdered by their mates, their men, girls being murdered... There is a rape culture rooted almost everywhere in the world."
Novella, from Guatemala, rested his head against his hand on Wednesday and appeared to keep his eyes closed for most of the time. He was convicted in June of murdering Kabrins Alban at a Camps Bay Hotel on July 29, 2015.
She was a successful US marketing executive before losing her energy to Lyme Disease. Novella had convinced Kabrins Alban to travel to South Africa for treatment.
The scene of her murder was gruesome, and the horrific details emerged in court previously.
Kabrins, who is being treated for post-traumatic stress disorder, said he was "not okay" because the violent images were stuck in his mind.
He imagined how his daughter would have pleaded for her life and how he kept hearing her voice saying: "Daddy, please help me."