My wedding is now about a month and a half away. We sent out invitations and are receiving rsvp's now (which is great!!). My future sister-in-law, and also bridesmaid, sent hers back saying two would be attending. My FH and I assumed she meant her boyfriend of 2+ years. When we met up with her this past weekend she told us she didn't even ask her boyfriend but is bringing one of her best girl friends. We don't know this girl at all. I feel a little uncomfortable with the entire situation! If she didn't know any of our other friends or any family or anyone I would understand not wanting to go to a wedding alone...but she is family and in the wedding and knows over half of the guest list!
How should I handle this?? We wanted to allow significant others to sit at the head tables with us since almost all are married...but should I let this friend sit there too??? Should I just say she isn't invited?? How can I do that without being rude? I don't know if my hesitation is normal or if I'm just over reacting--Please help!