thats what u get for murdering a child

Jess didn't murder the child. In the 4th chapter, the other vampires went to clean after the decomposing corpses and found out the child Jess fed from was missing, bloodied tiny footsteps signalling his escape. I think that's why you see in the first chapter that after feeding he went outside to probably feed from the corpses of the slaves, which is when he got captured.