I say that Josh needs to handle all the problems with HIS sister. If he thinks she need not be involved with the wedding then he should tell anyone asking, why she is not part of the wedding party. He should also take your feelings into consideration before his sister's. Sounds as though his sister is a pill!

Good luck. Let us know how it works out!

And, congratulations on your wedding coming up. I hope all runs smoothly and you have a wonderful day. Don't let just one person ruin it for you all. Let her sit outside the main event and stew in her own juices. She seems to thrive on it.

Again, have a wonderful day!