One other angle for things here...
From the sounds of it, you might just have a mouser. =\
Ball pythons can be notoriously picky. Sure, mice are not quite as good for them as rats are, but definitely not the worst you can do.
If it's less stress to get her to eat mice, and she takes f/t mice willingly... Might just be better to learn to work with it.
If you did want to try it a bit more, I also agree the hairdryer method being mentioned works well. That or my pickiest 2 right now will only eat rats that I thaw in a ziplock baggie in water. I guess the baggie locks the rodenty goodness in while they warm up. Maybe try that with some mouse bedding in there. But make sure it's stinky enough first.