IMO the stuff isn't worth a try. Some animals will be able to be switched to it, but really, do you want to offer your snake processed and preserved food over its natural diet? Ive heard of someone being able to successfully swtich their snake over to sausages but then couldnt get it off them, and then it quit eating the sausages altogether. But that is all I have heard of them, they arent a widely accepted food item (I don't even consider them to be a "prey item"). If your g/f doesnt like it, then tell her not to look, it's part of the cycle of life, nothing mean about it at all. Same deal as frogs eating flies and people eating cows. Id leave the sausages on the shelf and stick to feeding mice to your lil snakey
Happy feeding