[Endoperez]

I don't understand this "I have access to any spells or items, but I don't have any armies", especially with the implied "she kills my armies, but my battle-mages aren't where she fights". Any items? Make twenty-something Rods of the Phoenix, Vision's Foes, Piercers, Black Bows of Botulf etc, keep an A2 mage in lab. Teleport the air mage to somewhere, and move magically armed commanders, where you think she's moving, and cast Wind Guide and let fly. If she didn't attack, instantly move the items elsewhere through your network of laboratories.