She is most likely trying to establish the dominance of the pack, some dogs act stupid and go overboard.
You need to dominate her often. Let em all know you are the dominant pack leader, and that particvular dog needs it alot more often than the others. Somebody has to be top dog, and if they are just pups they are looking for a leader and trying to make their own decisions. My decision would be to "be the leader" and take all the guess work out for the pups. Establish this in your pack, and if the dog challenges you then you know the dog has serious issues.
X2, I will not put up with any fighting on my yard, box, woods anywhere. Im the leader of the pack and you have to let the dogs know that. You have to establish dominance over all the dogs or there will be problems eventually. I go as far as holding a dog down on the ground and biting their ear til they whine, if they snap back or growl its time to cull ruthlessly right on the spot. Thats just me and how its been done in my family for decades and it works.
I have seen a guy get down and growl in the dogs face until it looked away. But I ain't seen a man bite a dog. I will sit back with a beer and watch. Not poking any fun, I would bet money it works. But I liked watching the growling so I bet the biting would be good to watch too. I have growled and even made people think there was a dog fight. I love Tom T. Hall's song How to talk to a Little Baby Goat.
http://www.youtube.com/watch?v=dSbyQIUkHXk
