3) How can I know if she really has a problem? Maybe it really is me, like she says? Or both of us?
Many newly arrived members ask this question, Is it really me? Often we can read the posts and detect if there is something "off" in the perceptions. But merely asking the question is an indicator it's not you. Reasonably normal people are willing and able to ask "Is it me?" In this scenario, people with BPD traits (pwBPD) typically have high levels of Denial, Projection, Blaming, Blame Shifting and more.
It sounds like the counselor detected indications of BPD in your spouse and pointed you to Stop Walking on Eggshells. It may not be an official diagnosis. Many of us never learned of a clear diagnosis and so we have had to make our own observations and conclusions as to Why we are experiencing this discord.
In my own marriage (and divorce) I have never learned of a diagnosis for my spouse. When we first separated, the court ordered us both to get Psych Evals to get a quickie assessment. Mine was done by a grad student and - no surprise - I had "anxiety" which was reported to the court and her lawyer. My spouse? We never got a report and the court moved on. To this day, even after years in and out of family court dealing with custody and parenting concerns, I still don't know whether she even complied with that court order.
I too suspect something changed in the last couple years for you. In my case, we had been married over a dozen years with gradually increasing conflict with her co-workers but when we had a child everything suddenly got much worse than before.




Separating/Divorcing board