I gotta ask because an addiction isn't a small thing to cope with especially if you aren't an addict yourself, does it really matter whether its BPD or meth?
She sounds like either way she has a very long road to recovery. Precarious at best and most likely susceptible to relapse.
Are you interested in keeping this relationship going?
I am not in a relationship at the present moment. When I kicked her out of my home for hitting me a month ago she relapsed on drugs alcohol. At the present moment she's just being enabled by her whole family whom all are alcoholics / drug addicts themselves, all the while parading how happy she is and hooking up with multiple men.
Yes I would be interested in keeping it going if I got a solid commitment to change. But that seems very unlikely to happen.