For Daisy was young and her artificial world was redolent of orchids and pleasant, cheerful snobbery and orchestras which set the rhythm of the year, summing up the sadness and suggestiveness of life in new tunes.
If you want 26 points, it's optional; if you want more points than that, yeah, you should probably include a summing up sentence in one of the body paragraphs.
Because here they are in the conclusion, and here's my reason in the second body paragraph, and here's my reason in the first body paragraph, and here's the reason again in the summing up part of the body paragraph.
As you'll see at the end, this essay is a fairly long essay, it's actually longer than I usually recommend and that's mostly because I've put in this summing up sentence.