Well that article was a mixed up hash of rubbish, women rulers bring security and glosses over the violence many of them happily endulged. Cleopatra gets a mention, brother killed, Arsinoë IV was her half sister also killed on her orders. Many women lusted for power as much as the men and happily did whatever was needed to get it. Emperor Claudius had a wife like that who did him in and ran things through her son Nero until he decided mum needed to die.