I understand. I was in that same position. The second I could get away (in this case, it was my mother), I implemented total radio silence. At first, I dont think she really bought into it. But when I continued and stuck to my guns, so to speak, she got the message. When she emails me now, I respond with polite one or two word sentences...I stopped being the scapegoat. Now, she only has herself to contend with. I wonder sometimes who she is bullying or hurting/bothering now that I removed myself from the equation...but not for long...it is a passing thought that I dont get stuck with.
Over time, the distance, it has really helped me to see just how very cruel and unwell she was/is. I will never go back to that. Also, btw, I realized it wasnt me at all. She used my need / hurt to empower herself. She cannot take it out on me anymore and suck the life out of me. Like a vampire. I also realized she was repeating a pattern that she experienced with my grandmother.

Rose