Welcome Cschris19: I'm so sorry for the situation with your wife
Me and her are both addicts in long term recovery and her BPD is undiagnosed.
Are you maintaining your sobriety? How about your wife, is it possible that she has lost her sobriety?
About a month ago, I became suicidal over the whole ordeal, I checked myself into a hospital, hoping to leave with a diagnosis, they said it was situational depression.
I commend you for recognizing you needed help and checking into a hospital. Are you following up with some counseling and perhaps some meds? It takes time to work through things.
So what it basically comes down to is, how do I try and get her to stop destroying her life? How do I get her to come home? . . . I just want my wife and step daughter back.
My other question is even if we do get divorced is she ever going to feel real remorse or regret? I did everything I could for my wife and I treated her really well. There were definitely things I could have done better, but I didn't deserve this.
Unfortunately, you can't change your wife, only she can do that. No one deserves what people with BPD dish out. It wouldn't have mattered, if you were the perfect husband in all regards. The only thing you can do is to learn many of the communication skills and strategies that can help you manage the way you interact with your wife and react to her behavior.
The best thing you can do right now is to take care of yourself, and focus on staying sober and managing/recovering from your depression. Using certain skills can help your interactions with your wife, but she likely needs to acknowledge that she has behavioral issues and needs to get some therapy and possibly meds to manage her behaviors.
Boundaries are for your benefit. They may be hard to enforce, but they are important for the long run. Certain communication tools, can make things better for you. The links below are, also, good places to start.
VALIDATIONCOMMUNICATIONS OVERIVEWSETTING BOUNDARIES The two threads below can be helpful for you to avoid arguments and drama. At the end of the article on the Karpman Drama Triangle, there is information about healthy communication triangles.
AVOIDING CIRCULAR ARGUMENTSbpdfamily.com/message_board/index.php?topic=118892.0;all
KARPMAN DRAMA TRIANGLEhttps://bpdfamily.com/content/karpman-drama-triangleThis link goes to an interesting article about who Boarderlines lie so much?www.BPDcentral.com/blog/?Why-Do-Narcissists-and-Borderlines-Lie-So-Much-24Have you read any books on BPD? A lot of people start with the book, "Stop Walking on Eggshells". I actually got the audio book, but you can get a Kindle version or book form.