Hi Blue, you are, indeed, in a very difficult situation.

I know, from our exchanges, this has been problematic for quite some time. I know, too, how very hard you have tried to mend your relationship with your sister. You have truly done an outstanding job of being a caring, devoted sister, only to be deeply hurt and deeply disappointed again and again. My heart aches for you.

A woman named Randi Kreger has written at least two books. They are: Walking on Eggshells and Stop Walking on Eggshells. I think the books are also available in audible formats. I have heard there is a free workbook about which I am not 100% sure. I think Randi may give talks on youtube and/or TedTalks. Many people think very highly of Randi and learn a lot from her books and her workshops. you might get something from her insights. I think you'll find quite a bit about Randi and her teachings with a search on the net if you are interested?

I think it's very healthy for you to draw a line, taking good care of yourself, while you sort this all out with your therapist. We are all here for you, too.

I have to go for now, yet will be checking back in.

Please do not hesitate to contact me if I can help in any way, even if you just need to download.
I am here for you! Love ya!