The Wild Inside by Jamey Bradbury

Tracy has always felt better outside in the Alaskan wilderness than indoors in the cabin. She can hunt and survive just about anything except denying the hunger inside her. Her mom understands this strange affliction of her daughter's and tries to help Tracy by giving her simple rules to live by. The most important being - never make a human bleed. After Tracy is attacked in the woods she thinks she almost killed the stranger who attacked her and now fears his return. Then there are these new feelings toward Jesse the curious young drifter who her dad has hired and her ambitions to compete in the Junior Iditarod. This glorious hybrid is a combination of the wild beauty of Alaska, the harsh landscape and lifestyle of the people who live there and a bit of supernatural hyper-awareness that Tracy feels after succumbing to the hunger and filling the need for blood. This coming of age story in an unforgiving land will stay with you well after the last page.