I haven't checked out this case since she first disappeared. I was pretty sure then that something was afoul. I once hiked about 15 miles through that forest. I was north of State Road 40, but it's all about the same in terms of terrain.
That sand is really fine and is not compacted. Your feet sink into the stuff. A person might not go more than 2 mph for the first hour or two and possibly as slow as 1 mph after that. If you're not on a trail, it's easy to zig zag or change course without knowing it. That can affect you, too.
You can hear cars even when you are 4-5 miles from a road. This is especially true with louder engines like on a motorcycle. And the inclination is to walk toward the sound.
Sunset isn't until around 5:30 at that time of year. But the sun is low on the horizon for the last year and that makes it relatively dark by 4:30 in the forest, where the light is filtered by the trees.
Obviously, the math could be relevant here. It's possible that her walking speed and distance would have put her smack in the forest at sunset. And that would have exposed her to cold temperatures with no food and no water.
It got down to about 45 degrees that night. She might have been wearing shorts and a T-shirt. So it's possible that she died from exposure. The range for hypothermia in open air is about 35-50. Hypothermia sets in more easily if someone has been drinking.
So that's one theory. But I'm doubting that one. I believe she would have made it to a road or found a way to survive the cold.
Here's another angle.
About four miles north of State Road 40, my cell phone worked just fine while I was camped out in the middle of the forest about five years ago. That might not be the case closer to Altoona. I'm not sure. I assume that both of them had cell phones. I can't imagine her walking away without her phone. Even if it wasn't working, I would expect her to carry it so that she could call someone after she was out of the forest.
That forest is huge. It would take several thousand people to do a thorough search of that forest. And there are areas where access is extremely limited. In 2007 (actually about a month after my hike in the forest), a woman left a bar in the area and vanished. Her car was found in the forest, and they found her blood in the car. I'm not sure whether they ever solved the case. I believe they suspected a boyfriend or acquaintance. The point is that she was never found even though they had the vehicle. That forest is notorious for body dumping. And the locals know that some of the bodies are never found. It's the first place someone from that area would go to get rid of a body. If she was spotted at a convenience store, though, we can probably conclude that she was alive when she went into the forest. And that would suggest that whatever happened to her occurred while she was in the forest.
So that last bit provides another theory. And that pretty much indicates that she was killed in the forest.
Now, it's also possible that she made it out of the forest and caught a ride and disappeared. I imagine she wouldn't be the first hitchhiker to be killed. It seems unlikely that she'd jump into a vehicle and just decide never to return. But I suppose that's also a theory.
Here's my take on this: Her friend seems to suggest that she got out of the forest. That's a great way to discourage people for checking the forest for her. If I had a friend who was missing, I would assume that the person was still lost in the forest, and I'd be in a terrible panic to find them.
The bottom line is that this is a case that likely will never be solved unless someone, somehow, happens to stumble upon her remains.