The "save them" kids didn't possess anything?

So this might sound a bit far fetched, but it's just an idea i wanted to throw out there. So in FNAF 2, phone guy tells us that parts of the withered animatronics were used to create the toy animatronics.

So if this is the case, then their souls may have been left as wandering spirits. So i think that the 5 kids we see in FNAF 4 may be those wandering spirits, especially since the orange haired-green eyed girl apparently knows about the murders at FFP.

They could have died later, as well though. I'm not so sure on this theory, but it just seems like a neat idea.