Into Winter by Larry Landgraf

The ruthless dictator of Corpus Christi, Sandra Hawkins has blood in her eyes as she plans revenge against Peaceful Valley. Sean Lin discovers her plan, but does the small community stand a chance against her heavily armed and well-trained army? The valley's residents are wary hunters skilled at camouflage and stealth, but will toughness and smarts be enough to save their way of life from overwhelming force?