"Aang, no!" Katara all but screamed, scrambling around the wall and trying to grab her friend, to bring him back to himself. She was the only one who had ever talked him down from the Avatar State before, and she knew she had to do it now. He was from too soon. He didn't know what would happen if he died in that form. Didn't know that it would end the Avatar line forever.
Blue eyes narrowed at Azula as she continued to rain fireballs upon them, although Katara had noted that the woman's lightning hadn't been nearly at its best. Tucking that information away for later thought, she decided it was high time to make a move. Azula needed to be stopped, and before Aang could be injured. Or worse.
With a grunt she surged to her feet and the wall dissolved. Sending it at Azula with a shove of her arms, her gaze slid back to Aang for a split second. If she could just get him out of the way, could just get him to become Aang again instead of being the Avatar only... maybe she could do more. An attack meant to kill rather than just block, or possibly even bloodbend. Anything to stop the woman.