Darkness
When Montero first visits Consuelo's house it is completely dark, and lacks windows. He also doesn't have light in his room, and requires a candle to see. The text is surrounded by mystery, as Montero questions why Aura seems a seems to move her mouth when Consuelo is speaking, and assumes she is being held against her will.
As such, the darkness described in this text represents how Montero is 'in the dark' during this text, as he remains confused and uncertain about what is going on around him. The darkness also emphasizes the supernatural aspects of this text.
Age
Descriptions of age in this novel are detailed. When Montero is first interviewed by Consuelo, he focuses on her age in his descriptions. During the text Consuelo pines for her lost youth, and wishes to be young again. Her house also reflects her age, as it is musty and dark. In contrast, Aura's comparative youth and beauty is emphasized.
