They're ovoviviparous--they give birth to live young, like garters. I'm highly considering keeping her as a guest until she has her babies, for the sheer "aww" factor of how tiny and adorable they will be. I mean, she's tiny--how itty-bitty will the wormlets be?
And she'll be pretty easy to feed--dig up a worm or catch a slug every few days. We've got plenty of those, and my mom is actually thrilled that we found a snake that likes to eat slugs.