I'd talk with them, swap methods and give advice. I'm pro-choice and that means accepting not just my own death (which is actually easy to accept) but also give that right to others (which is harder to accept, I love them and I want to preserve them, both for my happiness and, as delusional me believes, also for theirs). I would offer different solutions as well, especially if it is mental health problems that can be treated. However, if treatment of psychological and physical conditions has failed them completely, I'll be there for them. I'd love it if someone was there for me, now. I think it would be easier to walk this path with a beloved human being by your side. Not saying the weird 'we die together hand in hand', but also just to discuss methods, have someone to exchange ideas with, exchange how we're holding up, what our date is, etc. As people on this site here are already courageously doing. I have made the mistake to talk to a friend of mine about my wish to CtB, she has two attempts herself and she was talking to me 2 years ago during a really tough time that she is preparing and thinking of dying. She betrayed my trust (no real consequences, I didn't tell anything about time date or reason). But yes, it would be nice to see a familiar face here.