HI Blue,

I am very sorry you had to endure that again. What a disappointment.

I know you love her and you keep trying and I find your devotion remarkable and commendable.
Ii think your sister realizes you love her and you will keep trying. It is important she does know you love her.
As others have mentioned, maybe you can save yourself some pain and get a message through to your sister by not giving in to her?
It does not mean you are giving up on her. It just means you are wanting to be treated well/right.

Your sister has not seen anything change. No matter what she does, people show up to help, to support her.
What if people stopped showing up? Might she get the message then?

She is not going to "get it," the fact that people are fed up, until they ACT fed up.

I know you know all of this. You are very intelligent. it is difficult when it concerns a family member. I think it is even more difficult because there are only two sisters. If you had another sibling to talk with, it might be easier to take a hard line with her.

No matter what you decide to do about this, I am here for you anytime!