I'm in the same boat. I don't talk to my parents except my mother through text. My middle brother and I don't talk at all. My baby brother and I talk to each other and see each other but rarely because he still lives with our parents. And my older half brother who I didn't know very well growing up and I are getting closer. The only thing I can suggest is distance and coping strategies. I've realized that I can't be around my family much and if I have to I leave as soon things get to overwhelming. As for your children protect them if you can otherwise separate them from what you need to. Good luck and remember do what you have to for you and your family's health/mental health.