C2's father passed away. C2 is fine with that. He has always thought his father to be a selfish asshole. 

C2 is concerned for the happiness of his step mother and wishes her well though he expect he will hear less and less from her as time passes. C2's side of her family was tolerated, not loved. I get the feeling they had a marriage of convenience. 

Tuesday evening the husband and I went out for dinner with C2. The husband suggested that maybe C2's father was mentally ill. C2 became very confrontational about that. C2 deeply believes his father was a selfish asshole by his choices, and not because he wasn't all there. 

C2's father did make C2's life needlessly tough and put him through much unnecessary pain. C2 is not ready to forgive his father for that, or to see him as anything but trash.