That is one of the reasons some feed prekilled. I am not trying to start a huge "live versus f/t" debate, but pointing out this does very occassionally happen. I feed some of my snakes live and some fresh killed (or f/t). I'd personally just use some antibiotic on it and watch it for infection. (red, swollen, etc) - Note that you dont NOT want antibiotic with pain reliever in it.. just normal antibiotic, or even triple antibiotic.

Let us know how she does...

Another issue you may have now, if your snake may become 'rat shy'.

Rick