I've had the same problem for almost 3 months now. My Pastel female was scared of f/t mice and rats! I have tried everything, but she didn't want to eat. So yesterday I looked in her tub and she was out of her hide, looking very skinny. I went to the store immediately and bought a living mouse. I put the mouse in the tub and it took her less than a minute to grab that mouse

Give it a try!
Good luck