The route to Watchtower that she finds will be a somewhat longer one than the straight path, but it's far safer. Her senses will allow her to warn them of approaching Kandorian patrols, and dangerous rubble slides that are just waiting to take unwary pedestrians by surprise.

Not to mention streets that are completely blocked by debris, or small pockets of radioactivity from when the military attempted to fight back.

Clark hasn't been in the city since his disastrous attempt to stop Zod from coming to power. And he's partly grateful for the early morning darkness, so he doesn't have to see it.