Elena Blanc was a letter Bee who died ten years before the main events of the anime by a particularly ferocious Gaichuu. Lag Seeing is given the task to deliver a letter to her grave along with Elena's dingo; Darwin. SpoilerThe letter turns out to be a trinket from Largo Lloyd. Elena and Largo were good friends before her death as can be seen in the heart of Elena revealed through Lag's Shindan.
