Help! How to tell a guest her child is not invited?

That is so weird that the website allows her to change the person's name! So weird. I feel like unfortiuately the only way is to reach out to her and say somthing along the lines of "Thank you so much for RSVPing to the wedding, we can't wait to have you there! Unfortunately, we are only able to invite you and your husband. Wer apologize for the inconvenience and hope you can find a way to still join us!"

So sorry this happen to you though. So stressful! I am not inviting chldren either and am dreading these problems

I would text or email her and say "Hey! I am so excited you can come to our wedding. I'm sorry for the confusion, but the invitation was only for you and your husband. Our wedding is an adult only event. I hope you can still come without your daughter, but please let me know if anything changes. Thanks!"

A mom with a 3-year-old is going to be very sensitive about feeling her little girl is being uninvited, so just make sure to put a sweet comment about her daughter in your text/ email.

I.E.: "We're so glad you can make it to our wedding! I'm sorry we can't have your daughter come as well. She is so adorable! However, the wedding is for adults only. I hope you'll still be able to come."

You have to be straight forward, don't delay and address it immediately. Let her know hey I saw you rsvp'd and I'm really excited but it will be adult only and we understand if that changes your choice to attend but we really want everyone to be able to enjoy themselves and have "date night" with us.