A slight variation of your answer to this question is being Menachem avel in any of these tragedies involving the untimely loss of a younger man or woman under inexplicable circumstances. I have heard and read many verts on this issue including the excellent piece by Rav Feiner posted here last week before yom tov. There is really nothing to be said and all the standard words we are prone to use ring so empty. There are times where I feel guilty about being unable to say anything that seems meaningful or that can provide some real support to the avelim. At the end, I simply learned to say little and simply listen to the avelim talk about their feelings and otherwise squeeze a hand or give a hug.
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