Wolves on the West Side — Michelle L. Levigne

A freak storm dumped two battered children into a river in the Cleveland Metroparks. No clue to their identity or why anyone tried to kill them. Yet that mystery was nothing compared to the secrets the girls protected. Lara could work minor magic, though she didn't know how she did it. Aggie could turn into a wolf. They knew they came from another world, but didn't know how or why, where that world was, or how to get home. Their only chance to find answers was to stay together, follow the stray bits of magic that they sensed around them, and find Aggie's twin brother. But first, they had to survive high school.