Answer:
My guess is that female killers are considered less likely to kill.
Step-by-step explanation:
Most female killers are considered jokes to even the government. For example, they don't even get threatening nicknames, such as "Jolly" Jane Toppan who confessed to a total of 31 murders and was said to have laid down beside her victims after she injected them with a lethal poison and watched them die. She even planned to kill more people than anyone would ever kill.