So one final question, when will the jill stop doing the kits head in by dragging it around to the nest etc? Take it it just depends when shes ready? Hopefully it wont be too long!
One thing i would do is increase the amount off food, this jills going to burn up extra chasing round after naughty kits at the end of the day she will be frantic if you remove the kit again & she will be frantic if you leave it in, so just top the food up & leave her to it, she will eventually get back to something like normal, its all hormnal behaviour