FounSheep, I just couldn't stop reading your story, it's incredible how strong a woman can be when she fights for her rights!
And yes you're right, it's your brother's problem if he doesn't accept your choice. But it's important to be there when he needs your help.
I think I still have all of this before me as I saw the real thruth only one year ago (April 2010) and I stopped attending meetings last January. My husband still goes with the children and respects my choice even if it's difficult for him.
As for my sister, I told her 2-3 weeks ago and she is disappointed...I don't know how she'll treat me in the future.
By the way, I too loved Avatar and I'm looking foward to seeing the follow-up!!! (2014 I think)
Take care,
Desi