I have been reading a book co-authored by Karyn Purvis called Connected Child. I can only speak for the first four chapters so far, but I think they are insightful chapters!
The book is about how to parent adopted children from abusive backgrounds. I first heard about this book through the resources listing on the Show Hope website, Steven Curtis Chapman's adoption ministry. I think the book is worth checking out and maybe even refer extended family (grandparents and others) to it to help give them insight into what is going on with the newest members of the family.
A recent trip to the beach to hang out with extended family went well, but upon coming home, we realized how difficult it was for our twins. It was a week full of establishing new relationships and relationships are some of the scariest things for them to face because of their background. It helped us see how to anticipate their struggles a little better and prepare them for meeting more of the family.