You could wait a week and try again. Out of curiosity, if you had a live mouse to feed first, and could double up this go I would try that. I have found once they are in "feed mode" they will eat nearly anything dead or not. I hope that helps, and if not, I would say let the snake skip a feeding, it wouldnt hurt to miss 1, kinda like my little girls, if they dont want to eat lunch they have to wait till dinner to eat. (I am sure the snake doesn't put it together that way - but hunger can be a pretty driving force!)