My mom's side of the family is throwing me a shower (all of FI"s family is out of town...a plane ride away, not driving distance) I plan to invite my FMIL because she has told me that she would like to come....but should I invite FSILs? I don't expect them to come or send a gift...but I also don't want them feel discluded or anythign like that...what is the etiquette on inviting people you know won't come?