Luther couldn't sleep, his body wasn't that used to sleeping after all. So he decided to just look after the creatures if they were resting well. He wanted somehow to take good care of them as they are the lady's advocates and they are like her daughters and sons. So he treats them just the same as she is, probably.
"They must really be tired. Her father, is he really a God? Seeing how he wants to manipulate her daughter's life, what is he planning to do with her daughter? Does he think that she's some kind of material to be used at?" He was thoroughly frustrated and he didn't know how he could control his anger.
He saw how cruel those traps were, if they weren't even the slightest bit smart, there's a huge chance that they'd already be six feet under. Those were the deadliest traps he has ever seen, and it seems to him that those were only made for the start of their journey.