The Summer of the Swans (Puffin Modern Classics)

Sara's life has always flowed smoothly, like the gliding swans on the lake, until her little brother Charlie disappears. Then Sara is forced to see her life in a whole new way. A teen-age girl gains new insight into herself and her family when her mentally handicapped brother gets lost Sara Godfrey was lying on the bed tying a kerchief on the dog, Boysie.