It's not your fault, like it's not your fault when children die of cancer. That doesn't mean we should find ways to prevent it. Most poeple who attempt or commit suicide don't want to die, but rather prefer death over life because they want to put an end to their suffering.

That said, I don't think talking about attempts will help someone who is suicidal in the slightest. If anything it leads to emulation suicides, also known as the Werther effect, see: https://en.wikipedia.org/wiki/Copycat_suicide