As someone who hikes these woods and knows them well, I have said this from the start. It is simply not possible to do it barefoot. Even if Summer had shoes on, she wouldn't have gotten far. You have to have built up endurance and muscle mass to keep up a decent pace. Even with that kind of physical training it's exhausting. And we're talking about a slender 5 year old girl here. I'm nobody really, so I get why some people won't take my word for it, but listen to what these searchers are saying. They will tell you everything you need to know about how likely it is that Summer made it far in this kind of terrain. Barefoot or otherwise. Now, I am not saying Summer isn't in those woods, she well may be. But if she is, I don't think she walked there.
JMO