The line is drawn when you start emailing her instructions of how to shoot herself in the face, provide her info where she can buy the shotgun and ammo with the explicit-ed purpose to shoot herself in the face and then when she messages you saying I have second thoughts about shooting myself in the face you need to reply shoot yourself in the face we'll all be much happier (or something similar)
Edit: it also needs to be obvious to any ordinary person that your GF has an obvious mental disorder too.
Really, so if she e-mails me "should i use the 30-06 or the 12 gauge" and I respond, "use the 12 gauge you dumb twat" then i am guilty of manslaughter?
You still don't see my point of how this is blurrying a line that has never been crossed before, where suicide can be blamed on others where society see it fit to do so to get out of the idea that it's so bad that the person might have ended it on his or her own?
It's fine I guess, until you are the one on the stand and have people arguing that you are guilty of things that you never even considered.
Everyone who is going to kill themselves have a mental disorder per any psychologist of your choosing, apparently you can't be sane and off yourself if you are perfectly healthy otherwise. Depression is a mental illness, hell everything is out of normalcy these days if you need an expert witness and thus a mental illness.
Guy took his life, his family is pissed, expert witnesses testify and get paid, ex girlfriend tells him to get it over with...
Think a good lawyer could win that case after this precedent? I do.