thanks for letting me see the world through your eyes. It's ugly and bitter and mean spirited. YOu accuse me of things I"ve never done, and you misinterpret my every word and action in a nasty negative and often inaccurate way.

I'm sorry, I guess I can't ever do what you need me to do. I can't figure out what it is! I have tried but I can see it's a waste of my time because no matter what I try, it's going to be wrong.
I valued our relationship so much that I sought counsel with a best friend and our mother (who would really like us to play nice together) and all that did is piss you off worse. I didn't know there was a rule in relationships that problems should be dealt with in secret. I have never lived that way. I learned a long time ago that seeking counsel is a good thing. But for some reason you find it to be an outrage that I would dare talk about you with anyone.
YOu somehow confuse my husband's letter to you as having something to do with me. If I have anything to do with that letter at all, it was to tone it down.
It's amazing that this makes you mad too. You asked for it.
I am starting to realize that you have turned into a nasty meanspirited person who I really don't want to be around, but it's too final for me to actually say this to you, so I am probably going to let your last accusatory letter just sit.
your only sister