Actually this was normal for me growing up in reference to my white girlfriends (I'm 21 now).
This looks less grown to me than some of the
weaves little black girls are sporting!
If I saw a young girl who liked soccer, gymnastics, etc. and preferred shorter hair to get her "score" on...why would I think she was being "grown"?
Even if she didn't like those things, I'd still think she was being less grown than if she had "pageant hair" spiral curled, back-combed, and teased into place with ribbons down her back!
I think we as black women associate these styles with woman hood far more than the white mothers of these children do, as, let's face it -the stereotype of all of us not having long hair comes from the fact we often wear fierce (but short) cuts.
More than anything people would think she has a "soccer mom" cut!