Stick to your guns! A true friend would not ask that of a friend. You mentioned it was a mutual acquaintance of yours and the designer. If she continues to be persistant, refer her to the designer who has the copyright. As I tell my son: "As you go through life, you have many acquaintances but only a few true friends. If you make this acquaintance mad with your decision, it is just one less acquaintance to deal with.