These babies were born in the wanabe community and were treated same as Indian babies from day one (to the extent they would tolerate it).
Remember, these young people were trying to be Indians and paid close attention to the details. I used to visit some local communities of wanabes back then to listen to their "medicine men", so I know what they were up to.
Yes, it is totally politically incorrect to imply in any way there are any inborn differences whatever from one race to another or between male and female, but that does not negate the liklihood there are such differences.