Sucks to be you bud. Maybe she is trying to tell you something

During the ceremony, she ought to patrol the parking lot to protect the guests’ cars, and then during the reception, make her be the ladies’ room attendant! That’ll teach that little shit.

Girl don’t worry about it. This sounds like some “edgy” joke I’d tell to a sibling at that age, she was probably just joking with her brother

someone should tell her that irl weddings are a tiny bit different than movie wedding. E.g.: there is noone that can object the wedding at the actual ceremony (except for the ppl getting married)

Afraid to lose her brother is what I'm going to guess that's going through her mind. Tell her she isn't losing her brother, but gaining a sister.

Watch out little sisters are powerful! I was 8 when my brother was dating a women and I didnt like her. He broke up with her years later I ran into her se still isnt over it

F your fiance's life for marrying someone who can't take a joke.

I have heard that speak now or hold your peace skipped over before...multiple times at that...so easy to have that not happen

At least she was honest

Well... now you know who not to invite! Seriously though... that sounds like something I’d have said at that age in that situation. Probably just a young teen being a smart ass, like they tend to do.