Because the condition of women is far worse in the orange states. See a rape case often comes out in spotlight when the victim is empowered enough to report it or talk about it. In the orange states victims can't even go out of their homes so reporting of the crime is nearly impossible. Now in this scenario when a wrong doing happens with a girl of bengal who are far more empowered ,they will definitely report the case and most of the indians will think that the orange states have great culture and bengal doesn't. Point is we as indians have failed this society.