Lesley
I have only just picked up this post, and can I say how very sorry I am to hear your family's very sad news.
When I was in my early twenties, a very close work colleague of mine did the same thing at a similar age, and it was several years before I could get it out of my head that I could not have stopped him.
He was a bubbly, good looking and popular boy, with a glittering career ahead of him, fantastic parents and a lovely girlfriend. He left no notes, or any indication of his intentions, but we later found out that because of certain things that had happened or been said, that he must have been planning the incident for months. It was, and still is, so very difficult to understand or not blame yourself for not spotting anything.
Your own son is so lucky that he has the two of you, and although you have had a really trying year, you are fighters and will get through this together. My thoughts and prayers are with you at this very dark time.
Regards, Melanie Giles, Insolvency Practitioner