An adaptation of the Book of Tobit. The greatest sin an angel can commit is to love someone more than God.
Heliotrope has also been called "turnsole," after its tendency to turn its flowers and leaves toward the sun over the course of each day. And at night it readjusts itself to face eastward, to be ready for sunrise. That tendency is at the root of the name heliotrope, too. It means to move with the sun.
A life-giver and a death-dealer were never destined to be. Before Hades and Persephone, there was the tragedy of Tartarus and Gaia.