I had a severe head injury once, and was prescribed medication for a mild depression. Much to my surprise, it actually worked! I have come across a lot of folks that don't seem to understand that depression is an illness, not a choice. Should those same individuals become clinically depressed themselves, they may still refuse to seek help, and persist in their belief that they should just "man-up" and tough it out. This is the course that frequently leads to self-extinction.
I can't comment on what Ralph's particular problems were, except to the extent that I already have previously. I did not recognize any signs of clinical depression, but then I am not trained for that either.
A few weeks after Ralph died, I had another employee that had serious drinking problems and was constantly in trouble with the local government. He was looking at serious jail time if he didn't go back to the halfway house one night, and I knew he didn't intend to go. It was obvious to me that he intended to kill himself that evening, after he had taken a nice last meal and gotten nice & drunk, too. I presumed that I would hear from him later that evening...Yep! I was up several hours in the middle of the night, trying to tote his sorry ass back to jail. I got the job done, but it took several hours, and I was damned tired the next day. He's been locked up since then, probably to his great advantage.
Like a bad penny, he will be coming back again...