2006 Guideposts hardcover, Susan Plunkett and Krysteen Seelen (Night Song). The Mysteries of Sparrow Island follow Abigail Stanton (an ornithologist), who moves to Sparrow Island off of the state of Washington's coast. Abby relocates to the island in order to help her sister (Mary) to adjust to her new life after a debilitating car accident leaves Mary in a wheelchair. Finnegan, Mary's service dog, also helps. - Amazon
This book is part of the Mysteries Of Sparrow Island Books series.