Was God Involved?

The Book of Esther: God is not mentioned in the Book of Esther. Are we intended to understand that God was involved - that God was a character ion this story, even thought never mentioned? How do we detect God's action and comprehend God's intention when, as someone put it, "God is subtle to a fault?" Borrowing from author Frederick Buechner, we trust that God offers the possibility of new life and healing. God the director conveys to us, somehow, from the wings, “if we have our eyes, ears, hearts open and sometimes even if we don’t, how we can play [our] roles in a way to enrich and ennoble and hallow the whole vast drama of things including our own small but crucial parts in it.”