Hello, my friend. Never apologize for being you, Nero. Those are your thoughts, and so, they are valid. They matter. There isnt anything wrong with being honest with how you feel and what you are thinking.
There is something wonderful about being someone with compassion and loyalty and having a conscience.
I have been where you are in terms of responsibility for my mom, who wasnt very nice for a long, long time. But I looked at it like this. She was my mommy. She gave me life. She did the best she knew how. So, I did the best I could to help her and take care of her til her last days.I did speak up kindly when she got too nasty. I have no regrets about it.
Your sister, on the other hand, needs some boundaries set. She has no right to treat you that way, Nero. It is not ok. Nor do you have to take it.
You know, Nero, you are always so hard on yourself. I dont know why that is. You are who you are. And there isnt a thing wrong with that.
I suspect when things come to a point where you cannot take it anymore, you will take action.
Until such time, embrace you, my friend. Realize how special you are, how unique. Remember that you are worthy and deserved to be treated that way.
Keep looking within, though. That should never stop. And be prepared to make changes when you are ready.
I am feeling that you are closer to that than you think.