I must be weird, I named most of the rats I had at first even though I didn't have them for much longer than an hour or two. I ended up with Boodles the fourth, Bibbles the second, and a Bobert before I ended up with too many snakes to easily name the casual feeders. I still name my breeding rats, but if they don't work out I've come to accept what happens next.

To be honest it's usually a good idea to keep an emergency rodent setup on stand by just in case your snake refuses a meal. A water bottle and box of food from walmart might cost you around 6 dollars (don't try a bowl. If she isn't flicking aspen in it she'll be smearing it in poo before you notice what's going on, and rat poo is a pain to clean).