The strangled noises Miss Potter was making were unsettling, but the sooner they could get her back to the hotel, the sooner they could tend to her emotional state. Or at least the sooner Dave could get her back, because if worse came to worst...
Severus nodded when Dave confirmed that he had her, holding his wand aloft still and fishing his mobile from his pocket, as well. Everyone was asleep by now, he knew, so it would be a while before they could get any help, even with an urgent message. But that was the best they could do at the moment. He couldn't very well send another Patronus with a message. They were ... otherwise occupied.
Once his message -- as brief as he could make it whilst still conveying the necessary information -- was sent, he wrapped his free arm around Miss Potter from the other side. "You're doing fine," he murmured to the girl, in what he hoped was a bracing tone. Then he leaned forward just a little to address Dave. "Should my Patronuses fail, keep going," he said, his voice tense now, even in spite of the Occlumency. "If they get to me, take my wand for light and keep going. No matter what happens, just keep going. You understand?"