It seems odd to me that they found cut hair which could be a match to her and possibly her sweatshirt and pants.
I would venture a guess that a psycho jogging trail killer would not cut her hair strip off her clothes and vanish with her body without someone seeing this at 8:30 or so at night.
If these clues are legitimate then I would conclude that someone put them there.
Since he is flinching at taking the polygraph I immediately suspect him much like I did with Scott Peterson!!
Has anyone heard how long they were engaged?
Does he have an ex-girlfriend?
Was there life insurance?
From the reward money it appears her family has money.
How much cut hair? Maybe she DID want to disappear. Cut & dyed her hair & changed her clothes.
I really hope she's not dead and that her fiance didn't do anything to her. Just another scenario.
When I was a teenager, my 17 year old neighbor ran away from home. She left a note for her parents behind a dresser. (Which they never found.) She assumed her mom would find the note when she cleaned. They thought she only left with the clothes on her back. In fact, she had been planning her escape for months, had a big winter parka, and huge backpack full of stuff. As far as her parents knew, she had nothing with her. They told police nothing was missing from her room. She was gone for 2 months before turning up in Kansas.