Lie Me Down Among the Cold Dark Pines by Mike Maroney
Sixteen-year-old Hart discovers a body in the forest above her new home. The girl died of a drug overdose and may have been involved with Hart’s grandfather. When he is arrested, Hart tries to clear his name. She believes him innocent, but also admits she has a selfish reason, she needs him to pay for her medicine, without which her life would be over.
When her brother is poisoned by an environmental accident, she discovers a link between the dead girl and the all-powerful local coal company. Soon Hart is involved in a murky world of drug gangs and cover-ups for environmental poisoning. Ignoring the risks she peels back the layers of small-town corruption, but when her secret is discovered her life gets really dangerous.