Try throwing a bunch of crumpled up newspaper in there. Just fill the tank up. Then in a week, try feeding her in her home enclosure. Pre-scent for 30 minutes (let the mouse thaw in the room or leave the live feeder in the room). Turn off the lights and place the prey item in the tank. If it is live, keep an eye on it but be very quiet. If it is frozen thawed, leave the room all together and come back in an hour and see if she has eaten. If not you can either heat it up a little bit with a hair dryer or just toss it. I sometimes leave F/T food in overnight if my girls are being picky.