Calvary weren't typically released until the enemy breaks formation. Even then it was usually heavy Calvary. Seeing as this wasn't a siege, thee enemy had no siege weapons and and the undead don't break ranks, they were fairly pointless and I would have sent them elsewhere. Seeing as she knows she's going into the mud gate by sea in king's landing, I don't think Danny cared that much either. At best they were a scare tactic and number in the types of battles Danny needed to have on this side of the water.
"There ought to be a term that would designate those who actually follow the teachings of Jesus, since the word 'Christian' has been largely divorced from those teachings, and so polluted by fundamentalists that it has come to connote their polar opposite: intolerance, vindictive hatred, and bigotry." -- Philip Stater, Huffington Post
always working on cleaning my windows- me regarding Johari
always working on cleaning my windows- me regarding Johari