Complex sentence: The first appearance of Luce 1 shows her at work, sewing, and when her father arrives to endorse her precipitous proposed marriage to the protagonist, Chartley, the older man is identified as "a plain citizen".
Split into simpler sentences: The first appearance of Luce 1 shows her at work, sewing. When her father arrives to endorse her precipitous proposed marriage to the protagonist, Chartley, the older man is identified as "a plain citizen".