Why is society so reluctant to admit women can be as evil as men?

I'm serious. It's nuts. I don't care who you are, but denying this fact is to suggest women can't be held accountable for their actions ever. I'm speaking of the case recently where a mom of three strangled her children, and attempted suicide. She's admitted she did it, her defense has admitted she did it, yet the internet wants to give her a free pass because hormones and vagina.
Why is society so reluctant to admit women can be as evil as men?
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