The other psychological issues a person could have empathy for. (Sorry, that's not meant to tell you how to feel about your mother, just how I see it from a distance.) But the narcissism - again to me - would be the deciding factor. A narcissist sees no reason to change. You can spend ages trying to say things so they will hear them, wondering "what if I said it this way or that way... will she finally get it then?" and wondering whether the problem is with you, that you can't explain things right. When you've been doing this from childhood, it gets very confusing and boundaries get very mixed up. It can be exhausting, heartbreaking, and so many other things being the one trying to change a family with a narcissist in it. It just doesn't work that way. Again, my experience, and I don't have all the information about your situation. It could be that a break will be enough for you to get some space and feel stronger. For me, it eventually led me to make the break permanent, and I still have times of doubting that it was really as bad as I think it was.