My mother recently got divorced from my father due to infidelity on my father’s part. She has decided, despite my firm insistence that she respect my personal boundaries and not share inappropriate details, to share very intimate personal details about my father’s sex life and sexual fetishizes. This causes fairly common arguments when I ask her to stop and more recently has led her to accuse me of being unsupportive of her trauma of being sexually assaulted. SEXUALLY ASSAULTED is a big accusation! So I asked her what happened, I hadn’t heard anything about this! She told me

“Your father didn’t ask consent to ME to sleep with that other woman!”

...

She is now livid with me for dismissing her OBVIOUS assault and is trying to force me to attend sexual assault sensitivity classes? Is cheating sexual assault? If not, how do I explain to her that the only person who needed to be asked for consent was his partner, no matter how hurtful his actions were.