Also if there is a Mudcatter whom she has mentioned in particular, in a positive manner, you could let them know, by Personal Message if you join, or in this thread, if you feel okay with it. That way they could also try to contact her and maybe help.

Good for you for calling her father. I hope he can persuade her to see a professional.

I've been through many scares with my brother and though it was a hard lesson to learn, I finally had to let go and just know that I'd done all I could and if he decided or decides to one day commit suicide, it will be his choice, not that of anyone else.

May all the best come your way and to your Mudcat friend,

kat