We know of one or two small towns where the victims are two young girls together. It's true that in both cases the young girls chose to isolate themselves in a secluded area of a remote park, in both cases without full parental approval, yet no one knows why. Was it snapchat?
Is abducting two girls the preamble to abducting a 20 year old jogger? If so, who was the first victim. Surely that wasn't two girls.
Crime of opportunity based on a propensity to that type of crime of opportunity makes sense. A propensity to do this suggests a fixation on abducting a young woman or girl for sadistic purposes. By sadistic, I mean purposes that are 100% in opposition to the victim.
I doubt this is someone she knows. She is going into her second year of university, completing an internship or taking some sort of university related courses during the Spring/Fall semesters, looking at the bigger picture of her life. She simply vanished off the face of the earth when her life was full of promise. It might be someone who has seen her, but I doubt it is someone that she has seen or paid any attention.