I am thinking way (way, way) out of the box here but this little one would have been Smurfette's age and I think the teeth are interesting....
https://www.findthemissing.org/en/cases/6778/2/
The teeth were definatly interesting. The only thing against it, is there is DNA submitted in her case. I am by far an expert, but I believe someone told me that if they are on Namus with Dna, they run that every few weeks and has probably already been ruled out.

Good idea, looking at some of the younger ones. I've thought maybe that she was part of a family abduction of some sorts maybe, and possible maybe its why she hasn't been reported??!? Maybe the parents were wanted, there are so many scenarios.?