As you may know, God is never mentioned in the book of Esther, either by name (Yahweh), title (Adonai), or being (El). Neither is prayer. Why not? I realize this is rather open ended, so I'll try to ...
Here's the text in question: Esther 4:15–16 (ESV)15 Then Esther told them to reply to Mordecai, 16 “Go, gather all the Jews to be found in Susa, and hold a fast on my behalf, and do not eat or ...