My fiance's ex wife doesn't live close by, but her grandmother does. So, my fiance has always made the effort to bring his son by to visit with his great-grandmother. I'm in contact with her quite a bit and she is the sweetest lady. She gives my son gifts for his birthday, Easter, etc. I asked my FI if he planned on inviting her to our wedding and he said "no." I can see where it could be inappropriate, but I just don't want to be rude. She has been very good to us. It will be hard not to mention our wedding and such....any advice?