My FI's mom has never really been a part of his life but we invited her because he said it is very important to him. Now we are about 12 days from the rsvp by date and have heard nothing. I called her and left a message but haven't heard anything... What should I do? FI is upset and says if she doesn't come he doesn't want anything to do with her. Should I drop it? Try to email or call again? I guess it's just tough for me because I am so close with my mom and can't imagine her not being there.