Junebug, just want you to know I'm still reading alone but don't know what much to say.
Yesterday then, it hit me. I realized something on a deeper level than before. First about you, than about me. (Thank you!) It's that by being put down by another repeatedly, over years and years, and being put down again when you've realized you've been put down, so when you wanted to speak up and defend yourself, so, again, being put down and down... that's how you learn the same thing, put yourself down. And then, when a time has come as an adult, when you go out and about (e.g. 9 hours a day at work, i.e. away from your sister), there is 9 hours of freedom from being put down, but what do we do? Step into their shoes in our heads and continuing as if they were there! Putting ourselves down, mimicking what they say, mocking ourselves using their words and even actions.
So, if you can not move out from your sister's and if you can not stop her from saying the things she does to put you down (and she does say the most cruel things, as did my mother, go kill yourself), you can stop telling the same things to yourself when she is not around! You can learn to focus on your own thoughts and actions towards yourself and learn to notice early-on that e.g. you're telling yourself "you're worth nothing". "I am worth nothing" is their "you are worth nothing" echoed! But they are not there some of the time, and at least that spare time you can be free from being told such things, if you find a way to notice you're echoing what they said. This is something you can learn. I know because I did. And yes, as with lots of things in my life, I have not managed to cut it all out completely in the sense that their echo does not start in my head, but then, rapidly I will catch it right there, slow down my thinking and breathing, consciously, and tell myself (sometimes out loud, it makes it more real sometimes) that I am alone, I am well, I am in reality now and my mother is not here and therefore there is no need to do this to myself anymore.
I so wish for you to stop echoing them. To some extent, dear Junebug, you've taken on their words and actions keep slapping yourself with them. According to what you wrote there are certain things you can not change at the moment. But there are things you can change, starting in your own head. You can leave the room when she enters. You can walk around the house just a minute or two, long enough to breathe and to remember that you deserve better. Awareness of what you deserve. It's not about what you deserve, or me, or anyone of us, it's important to make ourselves aware again and again and again of what we deserve. When we're more aware, we can take better care of getting there, step by step.
(((((((((((((Junebug)))))))))))))
Thank you for making me see this. The pattern behind it has opened up doors for me in another aspect of my life at the moment. I have come to realize that if I continue with something, it is really I who continues with something. Once I got that, some more options appeared on the scene.