Estrangement from family is a lot more common than you may think, Miss P. It's actually VERY healthy to separate yourself from a family member who is abusing you. I am permanently estranged from my brother (going on ten years now) and have no qualms or regrets. I also have distanced myself from cousin who sexually molested me, and other cousins who emotionally abused me. It's for your own mental health and well-being.

Family estrangement is a matter of perspective. I am pro-estrangement if it means you'll feel safer being away from that family member.