Hi and welcome. I am so sorry for all that you have been experiencing. It is good that you found us and are reaching out for support. We get it here.
My question is does anybody know how to stop a family member like this? What defuels a person like this?
Upping the ante will only feed the drama and the emotional dysregulation. So backing out of the drama will help. Are you familiar with the
Karpman drama triangle? We have a great article that explains how getting out of the triangle can diffuse such high conflict situations. Often when we are raised with people with PD or other highly sensitive people, we act in ways that either enable or encourage more drama... .without even realizing it. We all have been there to an extent so no judgement here. See if you can see the drama triangle playing out in your relationship with your sister.
Do you think she wants me to sue her?
It is hard to say for sure. I think she is feeding off drama of her own making and that suing her might be playing into her needs in some way. If you do not have the money to sue her, why do it? I understand wanting to defend yourself, I get it, I really do. I am not sure how a lawsuit will stop her though. I might be missing something though.
Who does this?
Unfortunately your sister does this as do a lot of emotionally difficult people whoa re lashing out and acting on their emotions.
I hope you get a chance to read the article I linked so we can talk about it some more.
In the meantime, hang in there.