Cassandra didn't stay long, no more than 20 minutes, but it was enough to time to calm her nerves and allow her to regain her natural imposing demeanour.
She remined Leo and Frost to stay safe as well as ordered them to keep an eye on Douglas, to make sure he doesn't get out of bed before Gilianna gives the ok before returning to her duties.
Once she left Leo took over the command centre in place of his father and Hamon- who was now resting- and his first order was for Frost to immediately help out on the northern wall.
They couldn't have everyone simply vamoose from their stations and rest while there was a lapse in the waves. That was impractical and insanely dangerous. The waves could start up again at any moment, faster than they'd be able to reman their stations.