I have a female pastel ball python I bought from a snake owner who only fed her snakes f/t mice. I've had her for a few months now and I've tried everything to get her to switch to rats. I've tried housing rat pup in mice bedding, I've switched the rat pup colors, I've tried different sizes, I've cut fresh killed dead mice and put blood on rat, I've warmed f/t rat and mouse together. Ive even put mouse bedding in with her while trying to feed her a rat. She smells them then jerks away. I breed rats and I have to drive a hour to get mice. Any advice on how to change her over? She's even not eaten for 2 weeks and still shows no interest in rats.