The thing you really gotta remember about the world of Skin Deep is that weird, unexpected things happen all the time and the history is really complicated and it is hardly EVER written down out of precaution. So even if there’s a solution to a problem that has been known for a hundred years, that info might not make it past like, one obscure family in Sicily or something. So while it seems pretty obvious that Sam is just a human like his mom, you can’t 100% rule out the possibility that his medallion malfunctioned somehow. And that’s the place where Sam lives.
I have restocked some sold out colors of my extinct animal bandanas!!! Check it out!