Final answer:
Jennifer Smithers' reaction during the final walk-through is not specified in the provided excerpts. Instead, we see surprise and realization in the characters of Jane Withersteen, Mrs. Peters, and Mrs. Hale in different contexts within their respective literary works.
Step-by-step explanation:
Jennifer Smithers is a character whose experience is not detailed in the excerpts provided, so it is impossible to determine what she might be surprised to see during the final walk-through. However, the passages given from various texts, which appear to be from classic literary works, describe scenes of surprise and discovery from other characters. In one, Jane Withersteen is astonished to find that Venters is with a girl or a woman.
Another passage describes Venters himself feeling dizzy as he witnesses an overwhelming situation. We also see a moment of realization between Mrs. Peters and Mrs. Hale when they discover the true cause of a bird's death in their kitchen, leading to a mutual understanding of a possible crime. Lastly, a scene depicts Withersteen watching Lassiter with mixed feelings of joy and fear. These examples illustrate the broad range of human emotions associated with surprise or the unexpected, common themes in literature often used to build tension and drive the narrative forward.