Well, I attended a very "backwards" sort of school, where only like 400 students of the 5000 where African American. We had two African American women in our GLO, Delta Phi Epsilon. They took a lot of crap from other African American students for "selling out" and it was really sad to see them lose friends over what they wanted to do. We did have one NPHC sorority on campus, and I would think that they could've joined that group had they wanted, but felt more comfortable or whatever at our group. I was more than happy to call them sister, and still am today
It can happen!