For outside the chamber it was indescribably worse, by a measure of degrees. For Harry was at war inside ... and drawing all energies of the palace to his banner. It was like being in a tsunami of potential energy, rushing to its Master's aid like a gale-force wind that whipped all around them. And Hermione was utterly powerless to help. She heard Harry's commands in her mind, felt his summons for assistance against Ron and the powers of Voldemort ... but she was unable to render even the most basic of aid. She didn't know how. 