I was diagnosed with BPD nearly two years ago, following a divorce. I started therapy as a result, and have made a lot of progress. I work full time, have my own place, pay all the bills and take care of my pets. I still have my struggles, but I function pretty well.

My best friend on the other hand, who also has BPD, is spiralling. She drinks booze every day, cannot hold down even a part time job, is pretty much homeless, and she's so angry and judgemental of everyone who cares about her. She's also started to self-injure by picking her skin. She will not take meds because she will not stop drinking. She's also making comments about suicide. 

I desperately want her to get help. Being a sober friend to a drunk friend is starting to become impossible. How do I set healthy boundaries to maintain my own sanity and sobriety? How the hell do you get someone help who refuses to get better? Can anyone relate?