Same thing happened to me after 31 years of marriage. I have two friends that had same experience.
One of them thinks there just has to be a “manual” for women to interrupt/terminate extended marriages. It is always a sad event. It took me three years to re-build the trust with my adult children. You see, I had refused to get into personalities or discuss the divorce with them. Now, we have very healthy relationships.
My prayers are with you both!
Gwjack