It was reported that her blanket was missing, but was it recovered? So little information.
Could that evening be the first NL meetup with DE, and DE discovered then that she was a little girl and rejected her. NL couldn't handle another rejection and storm off alone on foot and was abducted?
No, police said there was earlier sexual conduct. Might she have become pregnant? Or maybe it started with kissing but on that night he wanted to escalate or do something odd sexually?