Eli, your’s is a happy ending:

I predict that in ten years, if anyone is following the plight of these girls anymore, they will be popping out mixed-race babies and writing tell-all memoirs about “My Life As a Racist’s Daughter.”

In the end, these girls are mostly likely going to do something criminal, which is what their upbringing is all about—the men they are forced to admire were criminals, and to realize the kind of pure world their parents desire would require criminal (genocidal) force. I see a very sad ending for the twins. And the blame for this sad ending must fall on the state and not the twins.