If your friend actually "works" at a quilt shop, she is very well aware of copyright laws. At my LQS every employee is aware of these laws. We have to show we purchased a pattern during any classes we take. Even if we make copies to write or scribble notes on, the instructor will come around to see if we have the original. Any LQS runs the risk of huge penalties if caught if they don't abide by those laws. Let your friend know that you are concerned and don't wish for her or the shop to get into any trouble so you won't "share" your pattern.