I have decided to ask one of my future sister in laws to be the wedding coordinator on the day of the wedding. My problem is a friend of mine (also future sister in law) will be upset she does not have a role (she is not in the wedding party either as our party is small). I thought about having her help me to go shops and look at ideas and get items together for the wedding but I do not want to step on the toes of my MOH. I would ask her to co-coordinate the day of the wedding but the two sisters in law will not work well together. Any suggestions on a role for my second future sister in law?