I have two daughters with RAD and are currently going through different stages in terms of their attachment to us. Our oldest daughter is 14, we adopted her when she was 9 and I would say it took 3 years for a good attachment to my wife and I to occur. Our youngest daughter is 10, we adopted her when she was 9 and we are still going through a lot of the trauma of incidents that happened with her birth family from ages 3-5. She was in 14 different foster care placements in 15 months before living in a group home for 6 months prior to us meeting her.
If you want to learn more about our journey, my wife and I have a blog about our family here:
My Radical Family!
Matt