I finally scraped all the junk that was on the fractured pieces I've been getting. Thanks to those of you who sent what they found. Without fail, a piece has been found at all the sighting locations.
I recreated the shapes here. From what I can see, there's really only one way to fit them together, but I can't make heads or tails of what it is when assembled. I'm showing it here as discovered, maybe you can get something out of it.
[either she is missing a piece you have, or she just doesn't know the symbols]