Use all simple additions items that you can get your hands on. Use the new stainless stands. Use the large bowl upside down with the large platter on top right side up, then the medium bowl upside down in the middle of it with medium square right side up, repeat with the small bowl and square to make a large 3 tier stand. You can use another small bowl on the the very top (on top of small right side up square) to hold a dip or a pillar candle.
The savory cheese truffles are very good. I liked the smoky bacon alternative and I bought the bag of real bacon crumbles instead of cooking the bacon up myself. Use the small scoop to make dainty balls for a wine tasting.
Do one of the foccacia recipes, or one of the "finer" Italian recipes. I would do mostly finger foods. Make most ahead of time and just do the garnishes and such at the show.
I wouldn't do the wine - let her handle that - it puts more liability on her. I am always a little nervous at the shows with any form of alcohol.
You could have her buy several kinds of fancy cheeses, crackers, or french baguettes and display them on the bamboo carving board with the cheese knife and such. Fruit would be a good thing to have too.
Hope this helps some. I would focus on simple additions, cookware, and entertaining items for that show. If she is wanting elegant chances are that is what her friends want too.