Need advice, my FI's cousin from out of state is coming down and I invited her to my bach party, she then asked me if it was okay for her Mom to come to bach party (they are very close) I said I didn't have a problem with it if she wanted to. Her Mom is my FMIL's sister, she then asked if my FMIL and my FI's grandmother were coming too (not a typical grandma) I said I didn't know I hadn't asked them..... so here is my question am I totally out of the loop because I didn't know my FMIL and FI's Grandmother were supposed to be invited to my bach. party?? They are from a small town, maybe this is a regional tradition... please help!