m123, welcome! We're glad you're here!
So your sister thinks only your mom has BPD, and your mom insists only your sister has BPD. What an interesting dynamic!
Congratulations on your upcoming wedding.
![Way to go! (click to insert in post)](https://www.bpdfamily.com/message_board/Smileys/default/celebrate8.gif)
We've had several members here that have gone through wedding preparations with a BPD family member. We'd be happy to help you brainstorm solutions, if that would be helpful. We're also a good place to vent should you ever need to.
Let us know how we can support you.
![Doing the right thing (click to insert in post)](https://www.bpdfamily.com/message_board/Smileys/default/bpdfamil-01.gif)