I haven't had this discussion with FI yet, other than to know she's on the GL. I just want input on what etiquette would expect of us. FI is very close to his previous wife's mother, as she and her late husband were very supportive of him after their daughter ran out on him and the kids. As far as things related to the ceremony - do we seat her just before we seat his Mom? Do we do a boutonniere for her as well? She may not be fond of me, but I still want to make sure her relationship to FI is honored in the proper way. I also don't want to overstep and err when broaching this convo with FI.