So this is Daniel's slap to Eli's face. This is Daniel saying "I don't trust you". In this scene he disregards Eli's presence and grabs his little sister up to the front stage to bless the well. In fact, Daniel blesses the well himself. He does not believe in Eli's game. He even goes as far to repeat the words Eli asked him to say, replacing him with his sister, Mary. This is all intentional, he does this only to send a message to Eli.
