He kept her head low as they ran, making sure she didn't stumble or fall on the way. Twice he had to fire hexes at the Death Eaters, the rest of the time he just tried to keep his shield up. It would have been easier if he wasn't running and trying to focus at the same time. Once they'd reached the phone booth, he pushed Cassandra inside, worked it to get it moving. It seemed to take forever, and once it moved it rattled and clanged and he was half afraid it would stop.
He'd never used this way to get in or out, never needed to, and the time it took for the lift to ascend seemed like a lifetime. Not until it was finally up, and they could leave it knowing it wouldn't suddenly turn and go around again did he speak, looking carefully at Cassandra. "You're okay?" he asked, very much not okay himself. He couldn't focus on that now though, there were too many things too do, too much to handle.
He needed to tell Ben about Ronan, he should hear it first hand, then he needed to go to the Hogwarts and be prepared to defend it. He couldn't worry about whether or not Jamie had made it out okay or whether or not they'd survive an attack on Hogwarts. He could definitely not think about Ronan, lying on the floor in the building below the ground. A building which left no trace where they were. "You weren't hurt or anything?" Focus, work, worry later. If at all.