I would like to understand how not to lose myself, how not to sacrifice myself for an illness that I understand but it is not mine, if there is hope with therapy for example
Remember that you're responsible for you and she's responsible for her. That means you should be there for her when you can, but you also have to draw a line in the sand. If it's good for her, okay, try to help whenever you can. But not at the expense of your own mental health. If you're being screamed at, walk away...and try to do so graciously. (I'm sorry, I can't have this conversation right now, it's too much). But if that's not possible, then just walk away.
If it's abuse through calls/texts/emails, turn your phone off or temporarily block them. That sounds harsh, but it's actually teaching right from wrong and showing that some things are out of bounds in your life. Again, I have to remind myself so often that the BPDs in my life are sick...they're not attacking me as much as they're venting their own mental struggles. It's rarely meant to be personal and so often, they wish that they could take it back afterwards.
For example, you mentioned her going through your phone and trying to find "proof" of you cheating. That didn't happen in the moment, there was likely something that made her feel insecure and the thoughts had been building for some time. Maybe hours, maybe days even. And while her mind tried to rationalize things, her thoughts became more and more emotional. Before you know it, logic went out the window and it's 100% fear and paranoia taking over. The "emotional hammer" has struck and you have no idea there's even anything wrong.
Catch this- when BPDs are disordered, they're thinking emotionally and logic is all but shut off. Anything they say or do is based on their feelings in the moment. If you argue with them at that time, their feelings take that as rejection and things only get worse. Never, ever ever defend or argue at this time...either listen patiently or walk away. Once the BPD calms down, logic returns and a real conversation is possible.
Your job, when you can if the situation lets you, is to help her shift her mindset from an emotional/disordered state to calm and logical. Because when she's disordered, the words she's saying might have nothing to do with what's actually wrong, she just wants to rant and complain and let all of those emotions out.
For example, whenever my ex got upset she'd go back to the argument, "You've always hated my parents! You've never wanted anything to do with them!" (Notice the always/never language, that's black and white thinking in absolutes, a great sign for realizing it's "splitting" from disordered thinking). And every time, I'd take the bait and tell her how I loved her parents, took them on vacation with us all the time, did things for them, etc. The argument would rage on and on for hours because I wanted her to realize that she was wrong...but that's futile when she's thinking that way. She literally can't accept it right then.
Instead, I should have done one of two things.
One, I could have shown her empathy and calmly asked why she brought that up. Maybe she's yelling but I'm speaking calmly in a low voice. I'm showing real concern on my face because my goal is not to win an argument, it's to calm her down because I'm concerned about her. When I took this approach, the "argument" lasted minutes and it was over. Because I held my cool and was receptive to her needs, the moment passed and her mind regulated.
Two, if tactic #1 failed or I lost my patience, I should have made a short statement like, "I love you and I don't want to argue. I'm leaving and I'll call you later." Everything in that statement is about me to avoid casting blame...I'm not judging or arguing, and I'm making my intentions clear. Then I have to follow through and actually walk away.
Remember, you're responsible for you. She's responsible for her. By taking one of those two paths in every tense situation, you're helping her and you're doing what's best for your mental health as well. Never fight fire with fire, everything burns in that situation. And if things get too intense for a time, take a break and limit communication for a few days. Make it about you and healthy boundaries...I can't do this right now for my mental health. She will respect it or she won't.



