Help, thrown out ! Again

Hi, this is my first time posting but I'm in a real mess everything has escalated for so long we just can't seem to get good ground my wife's anger outbursts doesn't help anything she's had one several times in the last couple of weeks. My stepson father just committed suicide they both have ADHD. I love my wife I love my step-son I don't want to lose this marriage I just don't know what to do. My wife will not listen to me right now she won't even text me or talk to me I've been living at a friend's house for two weeks I went home today hoping that I can come back in and we can talk and that didn't happen she seemed more angrier than ever and I just don't understand why there has been no infidelity nothing like that just a stupid arguments and Outburst that is created on top of everything else. Help