Underground Cities: The Werefolk's Den

The main character of this story, Kiri, is a human born with wolf like features. These features allowed them to hear things clearer and further, have an amazing sense of smell, and strong. Even though this mutation was unheard of, they lived a "normal" life.
But things became strange at a camp kiri and their classmates went too for an overnight 5 day fieldtrip. Especially that deep lake off to the side of the camp. . .