Legal definition of rape:
"Penetration, no matter how slight, of the vagina or anus with any body part or object, or oral penetration by a sex organ of another person, without the consent of the victim."
So when a grown woman has sex with a 12 year old boy, she is not penetrating him. Thus, she is not raping him. He is the one doing the penetration.
But when a grown man has sex with a 12 year old girl, he is a rapist by definition.
So a grown woman who has sex with a 12 year old boy is by definition NOT a rapist.
Hail Jesus!