Dear Michelle,
I came here form another thread, hoping to find out more about how you are. I am so, so sorry to read what you're going through.
I haven't read everything everyone wrote, just a few posts, I'll come back to it all later as I'm sure there are countless pearls of wisdom to be savoured.
But, Inge wrote such sound advice, Una also gave a valuable perspective and there's very little to be added there. One thing that came to mind, though, is that it really is of utmost importance to take care of yourself - first and foremost. I always think of safety procedures on the airplane when adults are advised to put the oxygen masks on themselves first, *then* on the child next to them. There is nothing we can do for anyone if we don't take care of ourselves first, as simple as that.
Also, in situations like this I'd opt for physical distance if at all possible, even if just temporary. I think being away from the unhealthy atmosphere really helps look at things more objectively, rather than sharing the space - physical and mental - and always starting from the deep negatives and wasting so much precious energy and strength just to get yourself to that balanced state from which to start assessing how to get through another day. One gets to start hearing onself, the own inner voice, to enjoy the balance and piece that was craved for - all this can be achieved again.
A friend once told me, while I was going through some turmoils of different sort when I was weighing whether to stay in the bad, but familiar circumstances I knew how to handle or to jump into the new and the unknown, that we tend to lull ourselves into false sense of security in the old situations - no matter how bad they are, we have ways of handling them even though they use up our resources; on the other hand, the natural caution before the unknown is mistaken for the insecurity. Please, don't let the fear of the unknown stand in your way of untangling this.
You are a beautiful, intelligent, talented and extremely brave woman and have no reason to either tolerate or stay in the circumstances that are not worthy of you or do not make you a better person. Your life is yours alone and it's your one shot at being happy and fulfilled.
Lots and lots of love.