Be careful with what you read, there are so many diagnosis that seem to fit, but only a Psychiatrist can diagnose. I am familiar with BPD, and the others, and when you are dealing with something that requires a great deal of expertise to identify, let alone treat, she needs to be assessed properly. Not to mention you might worry yourself sick.
It is a good point though, that there may be something to her behaviour that she herself cannot identify or control. Some things are so obvious, like needle marks, and you know what you're dealing with. But even an educated guess isn't going to solve the problems here.
I agree with the others that this goes beyond the settling in phase of a new marriage. If anything you want to spend more time with each other, and her behaviour is for now, not something that is healthy for either of you.
Would she even agree to see the family doctor with you? That may be a less sort of invasive start with a person familiar with you both, and maybe a suggestion from him might not seem impossible to accomplish.