My female BP is the same - she took a f/t once, but before and after that she won't have anything to do with them. She'll actually slither over the top of them, and completely ignore that they're there, no matter how warm I get them. And if they have any blood on them, she hides. She actually bumped one with her nose that had blood on it - and spent about ten minutes rubbing her head on everything in the tub, trying to get the blood off presumably, even though I couldn't actually see any on her. I figure next week I can try braining, and I've heard of scenting them with tuna, though I tried braining a couple months back with no luck. Fortunately, my male BP's quite happy to take anything she turns her nose up at. My kingsnakes have never had any hesitation over taking f/t - I just drop it into a food dish in their tubs, and they're on it right away.