I don't know what to say - it is so unbelievably sad to realize that someone felt the only solution to be is giving up in such a way. 
Several things I have heard about suicide over the years that have always stuck with me:
Stephen King wrote what I feel is a very thoughtful and honest look at the option of suicide:
He wrote something along the lines of:
"The path to suicide is a long hallway with many doors on both sides with signs on them reading "What if?" and a door at its end with a sign on it reading "Too late!""
I also heard another person say, forgot who it was, but they said "Instead of killing yourself, why not just sell everything you own, take that money that you won't be needing anyway, and go live on a beach somewhere for a few months, and then think about it again."
Billy Connolly suggested that anyone considering jumping off of a tall structure to kill themself should maybe do a bungee jump first as a test run and then see how they feel about it.
I've also heard a story about a guy who jumped off of the Empire State Building and said he regretted his choice around about passing by the 8th floor. The story goes that he landed on a taxi roof which broke his fall enough just to end up extremely injured. Some versions of the story say that the taxi driver died.
As a person who is not suffering from clinical depression all of these comments make perfect sense to me.
But I have heard, read, and seen in movies (and even games) what actual depression is like for the people suffering from it.
The name itself "Depression" might be a bit unfortunate as it implies to others "I'm just really sad". And the general public responds with "It's tragic that he/she was so sad that they had to take that way out."
The things that people suffering from this condition go through every single moment of one of their downward trends are horrifying: They talk about their brain telling them every single moment things like:
"You're not good enough."
"Everyone hates you."
"The world would be better off without you."
"Kill yourself and everyone will be happier."
Like you have the ultimate bully in your head that will not shut up and you can never get away from and that your brain starts to believe.
I gotta admit that if I had to deal with that I would probably just get it over with.
Starting to unlabel the badly named illness of "Depression" as meaning just "Really sad" is a start maybe?
I have no idea...