Here's a question that's been on my mind this week. Our invite have gone our and RSVP deadline is this week. I invited a childhood friend of mine, her mother, and her older sister. I COMPLETELY forgot the sister was engaged (mainly b/c there is drame behind that and last I heard he was not welcomed in the family's home). But, now I am wondering - should I just let it go? OR should I email my friend's sister to let her know that her FI is welcome to join? Its kind of late in the game, but I know it was my mistake.