Marion is deprived of "the humble treasures of love, marriage, home and family", which Hitchcock considers elements of human happiness. There exists among "Psycho"s secondary characters a lack of "familial warmth and stability", which demonstrates the unlikelihood of domestic fantasies. The film contains ironic jokes about domesticity, such as when Sam writes a letter to Marion, agreeing to marry her, only after the audience sees her buried in the swamp. Sam and Marion's sister Lila, in investigating Marion's disappearance, develop an "increasingly connubial" relationship, a development that Marion is denied. Norman also suffers a similarly perverse definition of domesticity. He has "an infantile and divided personality" and lives in a mansion whose past occupies the present. Norman displays stuffed birds that are "frozen in time" and keeps childhood toys and stuffed animals in his room. He is hostile toward suggestions to move from the past, such as with Marion's suggestion to put