Emily, a 17-year-old student, had been living with her grandparents near Bournemouth since moving from Auckland to finish her studies.
She previously attended Hauraki School, Westlake Girls High and Takapuna Grammar.
Turner has described Emily as his girlfriend, but her family have said he was merely pursuing her.
Turner and Emily are said to have been drinking together on the night of her death.
Just days earlier, she posted on Facebook that she had a stalker. Friends probed further, and she wrote that she had been receiving calls from a private number and was "really scared".
"Someone just called me and i was like whos this? and they were like you dont know me but i know everything about you," she wrote.
Turner was remanded in custody while his parents were released on bail.