Without signing the documents that would permit adoption, young Theresa Cameron's mother placed her little daughter under the aegis of Catholic Charities, and then the mother vanished forever. During the 1960s and 1970s this abandoned, unadoptable child was shuttled through foster homes in the vicinity of Buffalo, N.Y. Insecure, desolate, and frightened, she was rotated through group homes and the houses of alien families, the victim of religious...