Well how are you feeding her the prey, by hands or tongs? Do u wash your hands before and after u handle the rodent and you out your hand in the enclosure? If you have the smell of rodent on your hand the snake will strike thinking your the prey. From my understanding and minimal experience,balls never strike out of aggression,but they do out of stress or fear...Could also be your husbandry. I am new to snakes,have my first two for 4 months now,but never got any signs of aggression from eating,being it web before or after I fed them or they ate. Your snake sounds highly stressed.
albo there is no reason to stress her out and feed her out of her enclosure. I feed mine inside there homes,where they live,where they are comfortable . That whole feed outside the tank thing is a myth from my experience,and from friends that told me and here on the site.i never ever get any cage aggression from my guys either.
i keep all my temps proper and monitored and humidity where it needs to be. My snakes are forever hiding and never ever aggressive,always very sweet and mellow.