The Question and Answer section for Ethan Frome is a great resource to ask questions, find answers, and discuss the novel.
Zeena waits up for the pair when Ethan goes to drive mattie home from a church dance.
Zeena is described as asthmatic and sickly. Ethan questions how sick she could really be.... he believed a lot of her ailments were false.
Then the room grew perfectly black, and not a sound was audible but Zeena's asthmatic breathing.
I looked, I'm really not sure where this is in the text. Do you have a chapter for this?