Didn't someone say that if they cut her for fraternizing, that she would take others down with her? If that's all true, maybe it was some of their favorites or better dancers, and they didn't wanna risk losing them. If they even knew who the other girls were. Idk. Kat was the only one that was really "exposed". You can't cut her for that, if you're not gonna cut the others that you may be aware of.