I had to get my little female eating again when i moved her into a new enclosure, i got a weener rat (eyes still closed, short fur and blindly stumbling around the place) and she hit it hard and had it eaten in about 15 to 20 minutes.
When it comes to the crunch, her natural instincts will guide her through the process. And then you will find she will want more and more, and hopefully, once she has the taste, she wont care if they are alive or just being wiggled infront of her dead.