I'm not sure how well the meds will work for her, uphillbattle, but there are treatments (namely dialectical behavioural therapy) that would help. If she is on meds, does she have a diagnosis, or is she awaiting one?
DBT is considered the gold standard for BPD treatments and almost always makes a huge difference, but the treatment has to be something your wife chooses for herself, or like with anything, it won't work,
The meds have made a noticable differnce, the therapy is also making a differnce. I know this because when she neglected to take her meds for 3 straight days you could tell she hadn't taken them but it was still much better than before.
She does not have a diagnosis yet, her doctor is still not sure yet. By what he perscribes it seems as if he has a suspition at the verry least.
Her theripst is doing CBT at the moment though.
My wife at this point is noticing the differnce, she is loving the fact that she is feeling better. She is having no problems going in the direction of the doctor and the theripst at the moment which is way better than I expected.