Quick update for anyone who cares. I got a hold of the seller and I was pleasantly surprised with his response. He was courteous, professional, and seemed very apologetic that I was dissatisfied. To resolve the issue I suggested a partial refund and that he allow me to keep the snake, because I didn't want return her. He willingly agreed. She's a healthy, well-mannered snake and I love her colors even if she doesn't have the genes I was after. (He did keep insisting she was an enchi, but I would have none of it. Now that I've researched enchis more the difference is pretty obvious. You know what they say, hindsight is 20/20.)

As for the snake herself: Her eyes are mostly dark, not like the lighter eyes enchis have. I'm pretty sure she's female though. No hemipenes when I popped her, not even any red near the sides of her cloaca where they would come out, and her tail is pencil thin. She also has het pied markers, though I know that doesn't guarantee anything. I'm going to keep her until she's big enough to breed and we'll see if she proves out.