My side of the story has never been told. It's too shameful. It would only bring shame to me, my parents, my in-laws, and my children. I should cut all ties and never say a word... right? or wrong?
Absolutely right that cutting ties from these people is the best move you could make in my opinion! As for talking about it...it doesn't seem like you will get a favorable response from people that are in denial like this, but if you can overcome the fear involved in telling them, then that in itself might be worth speaking up...for you...just to show that you have no fear even if they do not support you...at least you break the silence they have imposed on you, and that is a defiant act.
You can always tell them and then just leave and never look back...if you have the means to leave and think you can make it on your own?
These people are poison to you. The whole idea that your grandmother would say such a repugnant thing as that and tell other people this, is just pure evil.