The overall mood is nervous and filled with tension, something we only learn after the process of the lottery actually begins. Mrs. Hutchinson is extremely nervous.... high-strung, and as the story progresses Mrs. Hutchinson becomes hysterical.
"I think we ought to start over," Mrs. Hutchinson said, as quietly as she could. "I tell you it wasn't fair. You didn't give him time enough to choose. Everybody saw that."
Tessie Hutchinson was in the center of a cleared space by now, and she held her hands out desperately as the villagers moved in on her. "It isn't fair," she said. A stone hit her on the side of the head.