I had the same problem with a female a few years back and tried everything. The thing that finally worked was getting a few live pinkies and keeping them in the tub they came in for a few hours so the tub picked up their scent. She went after the live one and ate all 3. For the following feedings, I thawed, and fed out of the tub and never had a problem. The only logical explination I could come up with all went back to scent. It's worth a try...