Is there anybody actually surprised? I think even her Father said he had prepared her eulogy already. Even he wasn't surprised. Some people kill themselves in one moment of despair others take years about it.
From speaking to several survivors of suicide attempts, a common theme is that many of think that some how or other they'll still be around to see the results. But you'll still be dead next week, next year, ten years from now. Bad as your life might be being dead is no solution.
Sad really.