Okay, I've given it lots of thought and here's what I've come up with. When you complete your row you will sew it to the row before it. The owner sends you her row, you create your row and then sew it together.
Optional: If anyone would like sashing between their rows, include that in your package with the row you created for the top of your quilt. All sashing should be pre cut to the size it needs to be. For instance if your quilt is to be 60" wide and you want your quilt to have a 4" sashing include one piece of sashing for each member of your group make sure it is cut that 60" long (plus seam allowance of course). If you desire sashing please let me know as that will take a bit more math for your over all size.
Come the end of July what you will have in your mail box will be a soft cuddly package with one sewn quilt top. :)