There are a couple of posters here with backgrounds in child development and education.
What would adolescence look like for kids who basically only have siblings to interact with, and no real peer relationships? We normally think of teens being as rebellious and starting to assert themselves, but is that likely to have happened with these kids?
In 2006, Markis (7), Abigail (2) and Hannah (4) were adopted.
Three years later, Devonte (4), Jeremiah (3) and Sierra (1) were adopted. So for 9 years, you have 6 kids growing up together with 4 of them only two years apart. They were pulled from school years ago, and based on all reports, they have had limited social interaction with others outside of festivals, rallies and their parents friends.
I have no idea what their development might look like, given that they have limited exposure to role models and peers.