Amy hadn't wanted to give Korra the satisfaction of a big match, but at this point she was so completely fed up with the way she was being punked by Korra that she was just about ready to put a final end on this whole thing and show her who she was messing with. Korra wanted to fight, she was going to get one and Amy had every intention of making it her last one in LAW.
With a roar Amy marched out to the ring looking ready to murder something or someone. Korra wasnt in the ring, but that just met the crowd got to see Amy looking around like she was expecting to get jumped and attack back, some even worried that she would strike them them. That didnt come to pass, though she did look at them a mad women she went to the ring and started to pace around it like a wild predator.