So my idea is using the letters "re" as in returned or reborn, to show they came back from the old (dead) Virtuadopt.
I am not good with making neat shapes or the perfect lettering style for it, but I tried to do something.The Lotus flower symbolizes rebirth, so I thought that could work as a symbol/medal. I hope it's not too similar to the custom adopts crowns, I don't remember exactly what they were like, but I think maybe someone more skilled could make that work still.

It could also say "re:" to make it look a bit cooler xP