It's not that he's indifferent to the situation, but practicality is a necessity for somebody who has lived through multiple world wars and private wars, plagues, the Inquisition, and a series of personal crises. When they went to the Nexus to fetch help, Horvath was operating on very little sleep, and while the search party is out there he has little to do but wait. Catching up so he'll have the energy to do something about healing them up later seems the best course of action.

In between patients and awaiting the return of the search party, Horvath is dozing in the medical tent, coat wrapped close around him and hands tucked under his arms. He wakes at their arrival though, jerking upright with a snort. On the one hand, they're back! On the other hand, two limp forms slung over the back of the wolf-man is a disheartening sight and at first glance he's not sure if his services are needed or not.

He staggers up to his feet, using the table for balance and groping for his cane groggily, but the suggestion of breathing from one of the boys tells him what he needs to know. "If you could lay them down somewhere- I'll have to bring their temperatures up slowly, I'm afraid. Magic doesn't prevent the risk of shock." It does circumvent the need for a heating source though, and he can probably dry out their clothes if he needs to. In less than a minute he's gone from asleep to ready to get to work.