....about a girl who befriends an old lady's ghost in her attic.The ghost appears every day in an old rocking chair and has white hair in a big bun and wearing a black dress on the cover of the book. The girl has spiky black hair and a plaid shirt on and is looking at the old lady ghost,who looks sad. The picture of them on the book is like a drawing. That's all I remember. Hope someone can help!