Great, you handled the discussion with the right attitude and they have to respect that, bravo!
My daughter was about that age (11) when I disassociated and although she would be considered a good little witness, she understood all the reasons behind my decision. She was sitting outside the elder meeting when I disassociated myself, but I knew she was listening in a little (the door was open and nobody else was in the hall that day.) When I walked out she gave me a high Five and told me she was relieved that we could finally get away from it, that she never felt comfortable hearing that her grandma and different ones wouldn't make it if they didn't turn to Jah, etc. She said she just knew that some things were wrong, but didn't know why she felt that way.
We tried not to have to big of grins on our faces as we walked past some witnesses going into the hall to get ready for service. I had made peace with the fact that several "friends" would not talk to me anymore and I was just relieved to have it over with. Good luck and sounds like you handled it very well, congrats!
Anne