Their "rules" on DFd relatives ALLOW them to interact, particularly in the case of "important family business". I would think that your mom being hospitalized for a brain tumor qualifies as "important family business."
I hate to be a pessimist about this, but I'm betting that they KNOW the rules, are manipulating the situation to get sympathy from their dub friends. "boo hoo, I was in the hospital for a brain tumor and my son zanex... that wicked DF'd person.... didn't even come to visit me! so much for respecting ones parents!"
I hope I'm wrong. I really do. But I wouldn't be the least bit surprised if I'm right.
My adult life (without the family communication) is as similar and screwed up as my childhood. Both are acts of deprivation placed on me by my family.
Now I am only deprived of blood family interaction.
Childhood I was deprived of Normality. I was deprived of cake and socialization at school birthdays. Made fun of for not saluting the flag. Told who I could associate with (Most people I liked were "Worldly"). I never expected to go to College as "They only taught worldly things," (Like Rational thought!) Most tragic of all is the fact that I expected on a daily basis that Armageddon was coming and I was going to die.
So I often ask myself which is worse...My childhood or not having a relationship with those who gave me that childhood. Thank God for college and Rational Thought!