Lucille is Jacob's mother. Although she knows Jacob died over 30 years ago, she cannot deny the little boy in front of her looks, acts and is the boy she lost and embraces her lost son joyfully.
Bellamy: Did your son go missing sir? Mr. Langston: Why? Bellamy: I have him. He's OK. Mr. Langston: Well that would be fairly unlikely. My son died 32 years ago.