I as well, am sad to hear of your loss. I experienced a similar situation as well.
A few years ago, I met a provider who was very
inteligent, highly educated, great personaliy,
as well she was very kind, and open with herself
to me.
Well we began to become very close, and I was one
of those guys that she felt comfortable enough with, that she would email, and call me.
One evening she attempted to contact me, by phone,
and email, and instant mail, well long story is,
I was working on my computer, did not notice the
IM, and so I kept trucking along.
Well two days later, when I visited the local board,
I was shocked to find, She had taken her life.
I did not contact the family, her remains were
cremated, so end of story.
It took me along time to recover emotionally,
because I failed to see the signs of depression
in her, and in her last moments, I was not there
when she was in need of me as a friend,
I know, its not my fault, but I still feel bad
knowing that perhaps I could have been of assistance.