Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

You dont have to feel bad for not being a part of someone ELSE's war!
Let them fight it out.. or if possible just LEAVE. luckilly i'm old now and can just say 'BYE' and go somewhere else.. i dont know if you can do that. when i was younger i'd have to put on headphones and let them argue it out..
I am sorry that you are alone during your time at home.
Work on removing yourself from the situation. it's REALLY hard at first.. and then really hard again when things calm down then flare up.. but you have to remember, unless it's YOUR kids fighting it's not your responsibility, you shouldnt let yourself feel guilty because they cant fix their relationship.
Volcano - I know it sounds silly and it's hard for some people to do.. but check out meetup groups in your area, check the community center for activites, or even take a dance class.. It's easier to meet someone when you are DOING an activity or class. It's hard to just "meet" people.