Raven's mountain - Wendy Orr

Raven's sister and stepfather are trapped on the mountain top and their lives depend on Raven,inagripping wilderness-adventure by the author of Nim's Island

Raven is thefirst to reach the mountain top. Her sister and stepdad are still climbing the trail below. She is alone on top of the world. So she dances—a crazy, jumping, spinning dance, because if you can climb a mountain you can do anything! But then there is a rumble and the earth shakes. Rocks are falling, and so is Raven, in a terrible tumble down the side of the mountain. When she comes to, no one answers her calls. The rockfall is covering the trail where she last saw Lily and Scott.This isthe dramatic story of a girl who goes beyond her limits to save her family, andalong the way, discovers a mysterious bond with a family of bears and a raven.