Hi rockypath,
While it's good that your gf is diagnosed and in treatment, it's still, well, a rocky path...
You're very frustrated, and that's entirely understandable. pwBPD (people with BPD) have a penchant for making mountains out of mole hills. It's frustrating to say the least.
We have resources here, developed by leading experts in the disorder, which may help you reduce conflict by trying in a new communication style. It may segue well with whatever she is learning in DBT.
Communication using validationLet me know if that makes sense to start. We have a let of resources here, and members who are experienced in navigating BPD relationships who will support you
Turkish