Child of Rage was also an interesting doc.... HUGE trigger warning on this one!!! Please, do not watch unless you are in a safe place and are not triggered by abuse.

Not about adoption exactly but does show some hope as the child (severely abused and severe attachment problems) does make some improvement.

I have seen and read some other good stuff on adoption but they are usually about the process of identity and not so much about attachment (as they are not about older, abused children).

It is possible for there to be change... there will always be challenges, but attachment issues are not impossible to shift. You have a huge challenge, but please know that there is hope.