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This case is frustrating for many reasons. LE is not saying anything for months. There is a group that allegedly has a lot of information but isn't sharing. There are no groups out searching. That particular group threw a fit when WS members here (myself included) started posting about places to look for her and even had a local member (certified Search and Rescue, and former LE) go out and take a look at some of those locations.
Pennsylvania State Police almost always insists that nobody search while at the same time Pennsylvania State Police are prepared to sit on a case for years and even decades without doing much of anything hoping someone will stumble upon a victim. They always says they wouldn't want searchers to possibly contaminate evidence but they don't call off hunting in the area or shut down walking or hiking trails yet those very same hunters, walkers, or hikers that stumble upon someone could contaminate evidence as well. It is total nonsense when coming from Pennsylvania State Police. There is another active case here on WS out of Fayette County, PA where the locals told Pennsylvania State Police where they could stick their admonishment and volunteer fire companies from the area along with hundreds of volunteers searched anyway. I say, Good For Them!
So in this case it is very likely that we have Pennsylvania State Police running the Cops 101 playbook. No doubt having someone under some sort of surveillance hoping beyond all hope that the person will return to where Pennsylvania State Police need to look. If that person never goes back then nothing will ever come of this case until someone accidentally stumbles upon the right location. And if that hasn't happened by now then it isn't going to happen. That would require the person responsible to have some kind of a conscience and I don't see that being possible.
It is coming up on 6 months since Anna was reported missing and it is over 6 months since she likely disappeared. Perhaps Pennsylvania State Police will have something useful to say when the day arrives, but I doubt it.