The Question and Answer section for Where Are You Going, Where Have You Been? is a great resource to ask questions, find answers, and discuss the novel.
Arnold successfully disconnects Connie from all ties to her past. He forces her to accept his authority and let go of everything else.... leaving her with nothing to hold onto but him.
The third person point of view allows the reader to experience Connie's terror as her role in the story switches from that of a flirtacious, young woman to a terrified victim.
You might consider that Connie, like most teenagers, is in search of independence and identity as she nears adulthood.