But they didn't count the adopted girl. It just counted the little boy and the triplets.
In my family with six kids I got the Five and the Six message when I reached those numbers. None of them are adopted though.
It's like they aren't counting the adopted girl. She is .... strange though. When she plays with the toys her head spins around and around. It's really creepy.

The triplets names are Sandria, Cariana, and Paprika.