The choice may already be making itself apparent when Childermass scoops the Growlithe up into his arms, otherwise, if they were only walking, the dog could easily trot along on his own. Considering the first working example from just minutes ago, he doubts Baker would be able to follow him without some kind of contact.

"If I got it to work once," he says as he rises back to stand, "I should be able to get it to work a second time."

Which he says with the distinct hope it doesn't only work under near-death circumstances. He will in luck, though. Wanting to be away from here as quickly as possible works to the same effect and so, without further ado, he shoots Lambert one last look, one tinged with uncertainty, before turning towards the nearest patch of shadow in the already dark forest. He takes one step into it, two, three, and then he's gone, just like that, dog and all. Not even a 'good evening' or anything, just him, getting the hell out of there, as rude as that is.