What does one say to a friend who lost their mom?

When a friend loses their mother you show up. Now I said that knowing that I was and am woefully under equipped to console a friend during such a moment. I know not what to say or do as there is nothing one can do or say that will truly help. Instead I place a hand on the shoulder and travel between long bouts of silence where friendly words are to be and mindless chatter when the silence becomes awkward and unbearable.

My own troubles, which typically loom large, feel utterly insignificant in these moments; as there is still the possibility of remedy on the horizon. I wish I were wiser in these moments so I would know what to do.
What does one say to a friend who lost their mom?
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