That's unfair to say JUST females can't get along. Look at TGT for example. ALL of Hip-Hop.
Everyone is different, however some just happen to click more than others. Brandy & Monica were business partners. Their uniqueness as artist & being around the same age is what worked for them.
They have different styles, different voices, different aristry, different demographic of people who they hang with & different family backgrounds. That's innate. However, it just seems to be more prevelant when it comes to them being around each other. Their energies are just POLAR opposite s.