Well the tail is kind of fat. But sometimes where they are in their "teenage" stage, they can look very similar. On my herping trip this weekend I did come across some teenage garters that I had to take a second look at and in some cases, pop to be sure. The thing is that in our hobby, these things are bound to happen. You have to learn to just take it as a part of our hobby and not beat yourself up over it too much. Sexing errors, however rare they are, happen. Whether you do have a male or a female, you do have a lovely, alive, healthy snake, and just because you can't breed it, doesn't ruin or subtract from the value of having it. There are many years ahead that your snake will be able to successfully breed. If your snake was one of a kind, or extremely rare, and it suddenly died, then you would be SOL.... but there are many cb radix floating around, and even if they are not iowa albinos, there are many other snakes that would be compatible that would throw iowa albino babies. Iowa snows, and of course, any snake that is het. I think that sometimes, we hobbyists become so immersed in attempting to breed our snakes and to find suitable mates quickly so that we have babies to sell that we forget to step back and just admire them, and be glad that they tolerate our company, and whether or not they ever breed for us should be the icing on the cake... not our main focus or reason for keeping them. So my dear, I would say you are far from being SOL.