Nova enjoyed about three seconds of a mental victory dance before the tables turned on her. One second she was laughing into her scarf at a downed Otter, who was still being pelted with snow despite the fact he was buried in it. The next, there were two children barreling toward her with every intent of knocking her flat. Her scream was the wordless sort of plea that comes when panic set in. The pair of kids were unaffected. If anything, it just made them laugh that much harder. Nova was small enough that they were almost as big as she was. They didn't have to hit her very hard to take her down. She landed flat on her back with a soft thwap, snow billowing around her fallen form.
Unlike Otter, they didn't add insult to injury. With their own war cries, they jumped up and took off in another direction, looking for more people to pounce on. Nova wallowed for a few seconds, trying to find enough balance to dig herself out of the Nova-shaped dent in the snow. When she did, the first thing she saw was Otter, re-arming himself. Laughing, she held up two fingers in the universal sign for peace. "Truce!" She stumbled closer to him, all the time braced for a sneak attack from whatever direction. If Otter fired, she might be able to duck out of the way in time, but there were plenty of other little people running around that were just as capable as pelting her with snowballs.
Bending down, she scooped up some snow of her own before turning back to Otter. He probably couldn't see her grin, but it was wicked nonetheless. "We'll cream them first. Then I'll get you."