This is so strange to me.. I have a friend coming to the wedding who is aware she's invited, no biggie.. but she keeps telling me how she's trying to figure out who she's going to bring as her guest (she's perpetually single). In what world is it just assumed that she would get a guest? For example, she may bring her sister-in-law (brother's wife). Or a guy she's had a crush on for the last 5 years. This makes NO sense to me. We haven't sent invitations yet, so do I just assume she'll figure it out when it comes addressed solely to her?