(((wolfsong)) - so sorry for all these emotions and experiences you've endured. Sorry if I missed what's happening with your son - is he in prison or a mental hospital and what is his diagnosis? Is he being given medical treatment and medication. If not you have to advocate for him and tell the prison he needs proper medication.
It seems like your marriage is too far gone - the only problem is how will you support yourself. I think even a womens shelter would be better than living in your home. I think the only way for you to heal is to make a clean break from your husband. I hope you'll be able to eventually find some inner peace rather than living in limbo. Happy you got a good nights sleep.