Here's what I don't get though: All it would take is an ANONYMOUS tip from any one of these guys or any one who knows what happened and where she might be. Why can't any one do that? Surely they can offer something without self identifying.
Maybe this website will encourage an anonymous tip:
http://wetip.com/
Someone knows something - please make the information known, not yourself, by using the info on this website:
"Because people everyone...students, employees, citizens everyone needs a way to safely give information about something that they know a crime, a suspicion, an incident, a threat something they suspect something that scares them without fearing someone will retaliate against them for telling. It is simple, it is safe, it is totally and absolutely anonymous."
There's even a QR code you can scan to submit a tip. Be like Nike, Just Do It!