I come from a large family and no one has a relationship with anyone else in the family. It is a topic that we could talk about forever. But I feel like, in our case, it is our mother that designed things the way they are. Mix in a large dose of mental illness and you get severe dysfunction. I have hope that when Mom dies things will get better. Nice, huh!
You could be describing my family--except all hell broke loose when mom died. All of the unresolved issues and resentments came to a head and she fed them with her dying breath. No one speaks to each other anymore. Actually, it is one of the great disappointments of my life. I hoe your family does better than mine.