Grandma, Nana or Gram?

What's in a name?  I thought Nana would be fine, when my pregnant daughter asked me.  It sounded elegant and sweet.  But, the second I saw my first grandchild, I wanted to be Grandma or Grammy.  Who would have thought?  Someone so tiny has changed so many lives.  Sarah has become a mommy, Adam a daddy.  As for Grandpa and I - we just want to be there for her, to know her, and have her know us.