Stiefvater, Maggie. Linger (Wolves of Mercy Falls, 2). Scholastic Press, 2010. 17.99. 369p. 978-0-5451-2328-0
If you haven't read Shiver, Do Not LINGER here!
Those Mercy Falls wolves are calling and each character is having a different reaction!
Grace's body is falling apart from not being able to answer the wolves' call. Every cold gust of wind and every howl has Sam tensing up. Then he remembers he's cured. If only he could help grace. Cole LONGS to be a wolf. To hide. To be free of the pressures of being himself. And Isabelle, she just feels so alone. Each howl remind her of Jack's death, that she caused.
The turmoil caused by the wolves leads to Grace's fight with her parents and her subsequent moving in with Sam and Cole. But this does not help as much as they had hoped. "I never knew there were so many kinds of love or that love could make people do so many different things."
Forever can't come soon enough.