You keep your hold on the town for a couple of days. No one bothers you until you notice a swarm of refugees trickling into the town from the north, grumbling about the destruction of a Stormwind base north of you. You start seeing factions mobilizing in Moonbrook, one preparing to storm the Deadmines, one preparing to defend it.
Back the attacking party. Back the defending party. Back neither party. Try to make peace between the two.