My mother doesn't seem to be able to apply the gel, so she does the coloring and my sister and I apply the gel. We only do that to the squares she wants or ones that are really done well or will be quilted. She can make 3-4 a day on one of her good days. We probably have 150 by now. I've added borders to several of her blocks and quilted them into 18" x 18" quilts.
lots2do, the fun part is seeing the colors blend and become more vibrant when brushing on the gel. I hope your relative is able to do that.