You are allowed to terminate your relationship with toxic family members. You are allowed to walk away from people who hurt you. You are allowed to be angry & selfish & unforgiving & don't owe anyone an explanation for taking care of you.
I use to feel bad but not anymore. Took a long time to realize some people don't deserve my time or emotions. For my inlaws. Shame on your narcissism. Learn to behave like an adult. My husband can't even stand you. Terribly sad how you all treat him. Your only brother,your only son. Time to apologize and be an adult.