Ok, ladies. I've got a dilemma.
My mother and sister are throwing me a shower at FMILs house. FSILs MIL is going to be in town that weekend because of another family event and FMIL invited her to the shower (since she's already going to be here). She had no idea that by inviting her to the shower that she was in essence obligating me to invite her to the wedding. She did not get a formal invitation to the shower. So at this point she can't be uninvited and I'm feeling pressured to add her to my (already more robust than I want) guest list for the wedding.
I've met her a couple of times (most recently at the DW for said FSIL). I think she's a lovely person but I certainly would never have included her on the guest list. Thoughts? Do I have to invite her to the wedding?