She might very well react differently to a live feeder. My normal female acts very like the OP's when eating - zombie dancing a f/t feeder is just a waste of time. Normally I just lay the feeder down in her tub, and she eats it rather lazily and doesn't often bother to constrict it. I think she'd pick it daintily from my hand if I let her.
Last weekend one of the males that eats live only was not interested in eating, so I flipped his small rat into her tub. In a split second she became a wholly different animal - rather than lying in wait as an ambush predator, she tore after it, chased it to the other side of the tub, and hit it like a freight train. She knew the difference all right.