There are mean bitches in both genders, of any orientation, and any walk of life.
However, mean bitches tend to perpetuate their own misery. So if given enough time, they become their own self-correcting problem.
"The weakest soul, knowing its own weakness, and believing this truth that strength can only be developed by effort and practice, will, thus believing, at once begin to exert itself, and, adding effort to effort, patience to patience, and strength to strength, will never cease to develop, and will at last grow divinely strong."
- James Allen